Merge branch 'linux-next' of https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git

49 files changed, 1477 insertions, 892 deletions

diff --git a/drivers/acpi/acpi_fpdt.c b/drivers/acpi/acpi_fpdt.c
index e75dd28d31a9..79191ed20f76 100644
--- a/drivers/acpi/acpi_fpdt.c
+++ b/drivers/acpi/acpi_fpdt.c
@@ -168,7 +168,7 @@ static int fpdt_process_subtable(u64 address, u32 subtable_type)
 	struct fpdt_subtable_header *subtable_header;
 	struct fpdt_record_header *record_header;
 	char *signature = (subtable_type == SUBTABLE_FBPT ? "FBPT" : "S3PT");
-	u32 length, offset;
+	u32 length, offset, remaining;
 	int result;
 
 	if (!fpdt_address_valid(address)) {
@@ -182,10 +182,17 @@ static int fpdt_process_subtable(u64 address, u32 subtable_type)
 
 	if (strncmp((char *)&subtable_header->signature, signature, 4)) {
 		pr_info(FW_BUG "subtable signature and type mismatch!\n");
+		acpi_os_unmap_memory(subtable_header, sizeof(*subtable_header));
 		return -EINVAL;
 	}
 
 	length = subtable_header->length;
+	if (length < sizeof(*subtable_header)) {
+		pr_err(FW_BUG "Invalid FPDT subtable length %u.\n", length);
+		acpi_os_unmap_memory(subtable_header, sizeof(*subtable_header));
+		return -EINVAL;
+	}
+
 	acpi_os_unmap_memory(subtable_header, sizeof(*subtable_header));
 
 	subtable_header = acpi_os_map_memory(address, length);
@@ -194,17 +201,29 @@ static int fpdt_process_subtable(u64 address, u32 subtable_type)
 
 	offset = sizeof(*subtable_header);
 	while (offset < length) {
-		record_header = (void *)subtable_header + offset;
-		offset += record_header->length;
+		remaining = length - offset;
+		if (remaining < sizeof(*record_header)) {
+			pr_err(FW_BUG "Truncated FPDT record header.\n");
+			result = -EINVAL;
+			goto err;
+		}
 
-		if (!record_header->length) {
-			pr_err(FW_BUG "Zero-length record found in FPTD.\n");
+		record_header = (void *)subtable_header + offset;
+		if (record_header->length < sizeof(*record_header) ||
+		    record_header->length > remaining) {
+			pr_err(FW_BUG "Invalid FPDT record length %u.\n",
+			       record_header->length);
 			result = -EINVAL;
 			goto err;
 		}
+		offset += record_header->length;
 
 		switch (record_header->type) {
 		case RECORD_S3_RESUME:
+			if (record_header->length < sizeof(*record_resume)) {
+				result = -EINVAL;
+				goto err;
+			}
 			if (subtable_type != SUBTABLE_S3PT) {
 				pr_err(FW_BUG "Invalid record %d for subtable %s\n",
 				     record_header->type, signature);
@@ -221,6 +240,10 @@ static int fpdt_process_subtable(u64 address, u32 subtable_type)
 				goto err;
 			break;
 		case RECORD_S3_SUSPEND:
+			if (record_header->length < sizeof(*record_suspend)) {
+				result = -EINVAL;
+				goto err;
+			}
 			if (subtable_type != SUBTABLE_S3PT) {
 				pr_err(FW_BUG "Invalid %d for subtable %s\n",
 				     record_header->type, signature);
@@ -236,6 +259,10 @@ static int fpdt_process_subtable(u64 address, u32 subtable_type)
 				goto err;
 			break;
 		case RECORD_BOOT:
+			if (record_header->length < sizeof(*record_boot)) {
+				result = -EINVAL;
+				goto err;
+			}
 			if (subtable_type != SUBTABLE_FBPT) {
 				pr_err(FW_BUG "Invalid %d for subtable %s\n",
 				     record_header->type, signature);
@@ -317,7 +344,21 @@ static int __init acpi_init_fpdt(void)
 	}
 
 	while (offset < header->length) {
+		if (header->length - offset < sizeof(*subtable)) {
+			pr_err(FW_BUG "Truncated FPDT subtable entry.\n");
+			result = -EINVAL;
+			goto err_subtable;
+		}
+
 		subtable = (void *)header + offset;
+		if (subtable->length < sizeof(*subtable) ||
+		    subtable->length > header->length - offset) {
+			pr_err(FW_BUG "Invalid FPDT subtable entry length %u.\n",
+			       subtable->length);
+			result = -EINVAL;
+			goto err_subtable;
+		}
+
 		switch (subtable->type) {
 		case SUBTABLE_FBPT:
 		case SUBTABLE_S3PT:
@@ -330,7 +371,7 @@ static int __init acpi_init_fpdt(void)
 			/* Other types are reserved in ACPI 6.4 spec. */
 			break;
 		}
-		offset += sizeof(*subtable);
+		offset += subtable->length;
 	}
 	return 0;
 err_subtable:
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 00775b91bd41..5fbab54171b7 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -994,3 +994,357 @@ end:
 }
 EXPORT_SYMBOL_NS_GPL(acpi_processor_evaluate_cst, "ACPI_PROCESSOR_IDLE");
 #endif /* CONFIG_ACPI_PROCESSOR_CSTATE */
+
+#ifdef CONFIG_ACPI_PROCESSOR_IDLE
+struct acpi_lpi_states_array {
+	unsigned int size;
+	unsigned int composite_states_size;
+	struct acpi_lpi_state *entries;
+	struct acpi_lpi_state *composite_states[ACPI_PROCESSOR_MAX_POWER];
+};
+
+static int obj_get_integer(union acpi_object *obj, u32 *value)
+{
+	if (obj->type != ACPI_TYPE_INTEGER)
+		return -EINVAL;
+
+	*value = obj->integer.value;
+	return 0;
+}
+
+#define lpi_state_debug(handle, message, state_idx)	\
+	acpi_handle_debug(handle, message " for _LPI state %u\n", state_idx)
+
+static void process_lpi_state_package(union acpi_object *lpi_pkg,
+				      struct acpi_lpi_state *lpi_state,
+				      acpi_handle handle,
+				      unsigned int state_idx, bool strict)
+{
+	union acpi_object *lpi_pkg_elem, *obj;
+
+	if (lpi_pkg->type != ACPI_TYPE_PACKAGE || lpi_pkg->package.count < 7)
+		return;
+
+	lpi_pkg_elem = lpi_pkg->package.elements;
+
+	/* Get the entry method first and skip the state if that fails. */
+	obj = &lpi_pkg_elem[6];
+	if (obj->type == ACPI_TYPE_BUFFER) {
+		struct acpi_power_register *reg;
+
+		if (obj->buffer.length < sizeof(*reg)) {
+			lpi_state_debug(handle, "Invalid register data", state_idx);
+			return;
+		}
+
+		reg = (struct acpi_power_register *)obj->buffer.pointer;
+		if (reg->space_id != ACPI_ADR_SPACE_FIXED_HARDWARE) {
+			lpi_state_debug(handle, "Unsupported entry method", state_idx);
+			return;
+		}
+
+		lpi_state->entry_method = ACPI_CSTATE_FFH;
+		lpi_state->address = reg->address;
+	} else if (obj->type == ACPI_TYPE_INTEGER) {
+		lpi_state->entry_method = ACPI_CSTATE_INTEGER;
+		lpi_state->address = obj->integer.value;
+	} else {
+		lpi_state_debug(handle, "Invalid entry method", state_idx);
+		return;
+	}
+
+	if (obj_get_integer(&lpi_pkg_elem[0], &lpi_state->min_residency)) {
+		if (strict) {
+			lpi_state_debug(handle, "No min. residency", state_idx);
+			return;
+		}
+
+		lpi_state_debug(handle, "Assuming 10 us min. residency", state_idx);
+		lpi_state->min_residency = 10;
+	}
+
+	if (obj_get_integer(&lpi_pkg_elem[1], &lpi_state->wake_latency)) {
+		if (strict) {
+			lpi_state_debug(handle, "No wake latency", state_idx);
+			return;
+		}
+
+		lpi_state_debug(handle, "Assuming 10 us wake latency", state_idx);
+		lpi_state->wake_latency = 10;
+	}
+
+	if (obj_get_integer(&lpi_pkg_elem[2], &lpi_state->flags))
+		lpi_state->flags = 0;
+
+	if (obj_get_integer(&lpi_pkg_elem[3], &lpi_state->arch_flags))
+		lpi_state->arch_flags = 0;
+
+	if (obj_get_integer(&lpi_pkg_elem[4], &lpi_state->res_cnt_freq))
+		lpi_state->res_cnt_freq = 1;
+
+	if (obj_get_integer(&lpi_pkg_elem[5], &lpi_state->enable_parent_state))
+		lpi_state->enable_parent_state = 0;
+
+	/* Skip elements [7-8] i.e. Residency/Usage counters. */
+
+	/*
+	 * Avoid out-of-bounds access if the size of the package is less than
+	 * expected.
+	 */
+	if (lpi_pkg->package.count < 10)
+		return;
+
+	obj = &lpi_pkg_elem[9];
+	if (obj->type == ACPI_TYPE_STRING)
+		strscpy(lpi_state->desc, obj->string.pointer, ACPI_CX_DESC_LEN);
+}
+
+static int acpi_processor_evaluate_lpi(acpi_handle handle,
+				       struct acpi_lpi_states_array *info,
+				       bool strict)
+{
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	union acpi_object *lpi_data, *lpi_pkg;
+	unsigned int lpi_pkg_count, state_idx;
+	struct acpi_lpi_state *lpi_state;
+	acpi_status status;
+	int ret = 0;
+
+	status = acpi_evaluate_object(handle, "_LPI", NULL, &buffer);
+	if (ACPI_FAILURE(status)) {
+		acpi_handle_debug(handle, "No _LPI, giving up\n");
+		return -ENODEV;
+	}
+
+	lpi_data = buffer.pointer;
+
+	/* There must be at least 4 elements = 3 elements + 1 package */
+	if (!lpi_data || lpi_data->type != ACPI_TYPE_PACKAGE ||
+	    lpi_data->package.count < 4) {
+		acpi_handle_debug(handle, "Not enough elements in _LPI\n");
+		ret = -ENODATA;
+		goto end;
+	}
+
+	lpi_pkg_count = lpi_data->package.elements[2].integer.value;
+
+	/* Validate number of power states. */
+	if (!lpi_pkg_count || lpi_pkg_count != lpi_data->package.count - 3) {
+		acpi_handle_debug(handle, "Invalid _LPI state count\n");
+		ret = -ENODATA;
+		goto end;
+	}
+
+	lpi_state = kzalloc_objs(*lpi_state, lpi_pkg_count);
+	if (!lpi_state) {
+		ret = -ENOMEM;
+		goto end;
+	}
+
+	info->size = lpi_pkg_count;
+	info->entries = lpi_state;
+
+	/* _LPI State packages start at index 3. */
+	lpi_pkg = &lpi_data->package.elements[3];
+
+	for (state_idx = 1; state_idx <= lpi_pkg_count; state_idx++) {
+		lpi_state->index = state_idx;
+		process_lpi_state_package(lpi_pkg++, lpi_state++, handle,
+					  state_idx, strict);
+	}
+
+	acpi_handle_debug(handle, "Found %u power states\n", lpi_pkg_count);
+end:
+	kfree(buffer.pointer);
+	return ret;
+}
+
+/**
+ * combine_lpi_states - combine local and parent LPI states to form a composite LPI state
+ *
+ * @local: local LPI state
+ * @parent: parent LPI state
+ * @result: composite LPI state
+ */
+static bool combine_lpi_states(struct acpi_lpi_state *local,
+			       struct acpi_lpi_state *parent,
+			       struct acpi_lpi_state *result)
+{
+	if (parent->entry_method == ACPI_CSTATE_INTEGER) {
+		if (!parent->address) /* 0 means autopromotable */
+			return false;
+		result->address = local->address + parent->address;
+	} else {
+		result->address = parent->address;
+	}
+
+	result->min_residency = max(local->min_residency, parent->min_residency);
+	result->wake_latency = local->wake_latency + parent->wake_latency;
+	result->enable_parent_state = parent->enable_parent_state;
+	result->entry_method = local->entry_method;
+
+	result->flags = parent->flags;
+	result->arch_flags = parent->arch_flags;
+	result->index = parent->index;
+
+	scnprintf(result->desc, ACPI_CX_DESC_LEN, "%s+%s", local->desc, parent->desc);
+	return true;
+}
+
+#define ACPI_LPI_STATE_FLAGS_ENABLED			BIT(0)
+
+static void stash_composite_state(struct acpi_lpi_states_array *curr_level,
+				  struct acpi_lpi_state *t)
+{
+	curr_level->composite_states[curr_level->composite_states_size++] = t;
+}
+
+static bool too_many_states(acpi_handle handle, unsigned int state_count)
+{
+	if (state_count < ACPI_PROCESSOR_MAX_POWER)
+		return false;
+
+	acpi_handle_info(handle, "No space for more _LPI states than %d\n",
+			 ACPI_PROCESSOR_MAX_POWER);
+	return true;
+}
+
+static unsigned int flatten_lpi_states(acpi_handle handle,
+				       struct acpi_lpi_state *lpi_states,
+				       unsigned int state_count,
+				       struct acpi_lpi_states_array *curr,
+				       struct acpi_lpi_states_array *prev)
+{
+	struct acpi_lpi_state *parent_lpi = curr->entries;
+	unsigned int j;
+
+	/*
+	 * Combine each of the "raw" _LPI states from the current (processor
+	 * container) level with all of the composite _LPI states from the
+	 * previous (processor or processor container) level.
+	 */
+	for (j = 0; j < curr->size; j++, parent_lpi++) {
+		struct acpi_lpi_state *flpi;
+		int i;
+
+		if (!(parent_lpi->flags & ACPI_LPI_STATE_FLAGS_ENABLED))
+			continue;
+
+		if (too_many_states(handle, state_count))
+			break;
+
+		flpi = &lpi_states[state_count];
+
+		for (i = 0; i < prev->composite_states_size; i++) {
+			struct acpi_lpi_state *local_lpi = prev->composite_states[i];
+
+			if (parent_lpi->index > local_lpi->enable_parent_state)
+				continue;
+
+			if (!combine_lpi_states(local_lpi, parent_lpi, flpi))
+				continue;
+
+			stash_composite_state(curr, flpi);
+			state_count++;
+			flpi++;
+
+			if (state_count >= ACPI_PROCESSOR_MAX_POWER)
+				break;
+		}
+	}
+
+	return state_count;
+}
+
+int acpi_processor_extract_lpi_info(acpi_handle pr_handle,
+				    struct acpi_processor_power *pr_power,
+				    bool strict)
+{
+	struct acpi_lpi_states_array info[2], *prev, *curr;
+	acpi_handle handle = pr_handle;
+	unsigned int state_count = 0;
+	unsigned int i;
+	int ret;
+
+	if (!osc_pc_lpi_support_confirmed)
+		return -EOPNOTSUPP;
+
+	curr = &info[0];
+	curr->composite_states_size = 0;
+
+	ret = acpi_processor_evaluate_lpi(handle, curr, strict);
+	if (ret)
+		return ret;
+
+	/* Copy all of the usable first-level states to power.lpi_states[]. */
+	for (i = 0; i < curr->size; i++) {
+		struct acpi_lpi_state *lpi = &curr->entries[i];
+		struct acpi_lpi_state *flpi;
+
+		/*
+		 * Skip states that are not enabled or have an inadequate entry
+		 * method for this level.
+		 */
+		if (!(lpi->flags & ACPI_LPI_STATE_FLAGS_ENABLED) ||
+		    lpi->entry_method == ACPI_CSTATE_INTEGER)
+			continue;
+
+		if (too_many_states(pr_handle, state_count))
+			break;
+
+		flpi = &pr_power->lpi_states[state_count++];
+		memcpy(flpi, lpi, sizeof(*lpi));
+		stash_composite_state(curr, flpi);
+	}
+
+	kfree(curr->entries);
+
+	/*
+	 * If there are no _LPI states at the first level, there are no _LPI
+	 * states at all.
+	 */
+	if (!state_count)
+		return -ENODATA;
+
+	prev = curr;
+	curr = &info[1];
+
+	for (;;) {
+		struct acpi_lpi_states_array *tmp;
+		struct acpi_device *d;
+
+		if (ACPI_FAILURE(acpi_get_parent(handle, &handle)))
+			break;
+
+		d = acpi_fetch_acpi_dev(handle);
+		if (!d)
+			break;
+
+		if (strcmp(acpi_device_hid(d), ACPI_PROCESSOR_CONTAINER_HID))
+			break;
+
+		curr->composite_states_size = 0;
+
+		ret = acpi_processor_evaluate_lpi(handle, curr, strict);
+		if (ret)
+			break;
+
+		/* flatten all the LPI states in this level of hierarchy */
+		state_count = flatten_lpi_states(pr_handle, pr_power->lpi_states,
+						 state_count, curr, prev);
+
+		kfree(curr->entries);
+
+		tmp = prev, prev = curr, curr = tmp;
+	}
+
+	/* reset the index after flattening */
+	for (i = 0; i < state_count; i++)
+		pr_power->lpi_states[i].index = i;
+
+	pr_power->count = state_count;
+
+	return 0;
+}
+EXPORT_SYMBOL_NS_GPL(acpi_processor_extract_lpi_info, "ACPI_PROCESSOR_IDLE");
+#endif /* CONFIG_ACPI_PROCESSOR_IDLE */
diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c
index f93e877f87f6..4d6fd9f6e9ad 100644
--- a/drivers/acpi/acpi_video.c
+++ b/drivers/acpi/acpi_video.c
@@ -1048,7 +1048,7 @@ static int acpi_video_bus_check(struct acpi_video_bus *video)
 	if (!video)
 		return -EINVAL;
 
-	dev = acpi_get_pci_dev(video->device->handle);
+	dev = acpi_dev_get_pci_dev(video->device);
 	if (!dev)
 		return -ENODEV;
 	pci_dev_put(dev);
@@ -1702,7 +1702,6 @@ static void acpi_video_dev_register_backlight(struct acpi_video_device *device)
 {
 	struct backlight_properties props;
 	struct pci_dev *pdev;
-	acpi_handle acpi_parent;
 	struct device *parent = NULL;
 	int result;
 	static int count;
@@ -1717,13 +1716,9 @@ static void acpi_video_dev_register_backlight(struct acpi_video_device *device)
 		return;
 	count++;
 
-	if (ACPI_SUCCESS(acpi_get_parent(device->dev->handle, &acpi_parent))) {
-		pdev = acpi_get_pci_dev(acpi_parent);
-		if (pdev) {
-			parent = &pdev->dev;
-			pci_dev_put(pdev);
-		}
-	}
+	pdev = acpi_dev_get_pci_dev(acpi_dev_parent(device->dev));
+	if (pdev)
+		parent = &pdev->dev;
 
 	memset(&props, 0, sizeof(struct backlight_properties));
 	props.type = BACKLIGHT_FIRMWARE;
@@ -1734,6 +1729,7 @@ static void acpi_video_dev_register_backlight(struct acpi_video_device *device)
 						      device,
 						      &acpi_backlight_ops,
 						      &props);
+	put_device(parent);
 	kfree(name);
 	if (IS_ERR(device->backlight)) {
 		device->backlight = NULL;
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index 3236a3ce79d6..48f915ee5a0d 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -1397,8 +1397,8 @@ no_work:
 	return rc;
 }
 
-static int ghes_in_nmi_spool_from_list(struct list_head *rcu_list,
-				       enum fixed_addresses fixmap_idx)
+static int __maybe_unused ghes_in_nmi_spool_from_list(struct list_head *rcu_list,
+			       enum fixed_addresses fixmap_idx)
 {
 	int ret = -ENOENT;
 	struct ghes *ghes;
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
index af7a9b2fd5bc..34412cd697d8 100644
--- a/drivers/acpi/arm64/iort.c
+++ b/drivers/acpi/arm64/iort.c
@@ -789,11 +789,9 @@ struct irq_domain *iort_get_device_domain(struct device *dev, u32 id,
 	return irq_find_matching_fwnode(handle, bus_token);
 }
 
-struct fwnode_handle *iort_iwb_handle(u32 iwb_id)
+acpi_handle iort_iwb_handle(u32 iwb_id)
 {
-	struct fwnode_handle *fwnode;
 	struct acpi_iort_node *node;
-	struct acpi_device *device;
 	struct acpi_iort_iwb *iwb;
 	acpi_status status;
 	acpi_handle handle;
@@ -808,6 +806,19 @@ struct fwnode_handle *iort_iwb_handle(u32 iwb_id)
 	if (ACPI_FAILURE(status))
 		return NULL;
 
+	return handle;
+}
+
+struct fwnode_handle *iort_iwb_handle_fwnode(u32 iwb_id)
+{
+	struct fwnode_handle *fwnode;
+	struct acpi_device *device;
+	acpi_handle handle;
+
+	handle = iort_iwb_handle(iwb_id);
+	if (!handle)
+		return NULL;
+
 	device = acpi_get_acpi_dev(handle);
 	if (!device)
 		return NULL;
@@ -2090,6 +2101,11 @@ static void __init iort_init_platform_devices(void)
 	}
 }
 
+u32 arch_acpi_add_auto_dep(acpi_handle handle)
+{
+	return acpi_irq_add_auto_dep(handle);
+}
+
 void __init acpi_iort_init(void)
 {
 	acpi_status status;
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index f5e0eb299610..0084f308b790 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -10,10 +10,12 @@
 
 #define pr_fmt(fmt) "ACPI: battery: " fmt
 
+#include <linux/ctype.h>
 #include <linux/delay.h>
 #include <linux/dmi.h>
 #include <linux/jiffies.h>
 #include <linux/kernel.h>
+#include <linux/kfifo.h>
 #include <linux/list.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
@@ -21,6 +23,7 @@
 #include <linux/slab.h>
 #include <linux/suspend.h>
 #include <linux/types.h>
+#include <linux/workqueue.h>
 
 #include <linux/unaligned.h>
 
@@ -43,6 +46,9 @@
 
 #define MAX_STRING_LENGTH	64
 
+#define MAX_QUEUED_EVENTS	16
+#define NOTIF_MERGING_MS	10
+
 MODULE_AUTHOR("Paul Diefenbaugh");
 MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>");
 MODULE_DESCRIPTION("ACPI Battery Driver");
@@ -95,6 +101,8 @@ struct acpi_battery {
 	struct power_supply_desc bat_desc;
 	struct acpi_device *device;
 	struct device *phys_dev;
+	struct kfifo acpi_notif_fifo;
+	struct delayed_work acpi_notif_dwork;
 	struct notifier_block pm_nb;
 	struct list_head list;
 	unsigned long update_time;
@@ -150,27 +158,28 @@ static int acpi_battery_technology(struct acpi_battery *battery)
 
 static int acpi_battery_get_state(struct acpi_battery *battery);
 
-static int acpi_battery_is_charged(struct acpi_battery *battery)
+static bool acpi_battery_is_full(struct acpi_battery *battery)
 {
-	/* charging, discharging, critical low or charge limited */
-	if (battery->state != 0)
-		return 0;
-
 	/* battery not reporting charge */
 	if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN ||
 	    battery->capacity_now == 0)
-		return 0;
+		return false;
 
 	/* good batteries update full_charge as the batteries degrade */
 	if (battery->full_charge_capacity == battery->capacity_now)
-		return 1;
+		return true;
 
 	/* fallback to using design values for broken batteries */
-	if (battery->design_capacity <= battery->capacity_now)
-		return 1;
+	return battery->design_capacity <= battery->capacity_now;
+}
 
-	/* we don't do any sort of metric based on percentages */
-	return 0;
+static int acpi_battery_is_charged(struct acpi_battery *battery)
+{
+	/* charging, discharging, critical low or charge limited */
+	if (battery->state != 0)
+		return 0;
+
+	return acpi_battery_is_full(battery);
 }
 
 static bool acpi_battery_is_degraded(struct acpi_battery *battery)
@@ -211,13 +220,14 @@ static int acpi_battery_get_property(struct power_supply *psy,
 		if (battery->state & ACPI_BATTERY_STATE_DISCHARGING)
 			val->intval = acpi_battery_handle_discharging(battery);
 		else if (battery->state & ACPI_BATTERY_STATE_CHARGING)
-			/* Validate the status by checking the current. */
-			if (battery->rate_now != ACPI_BATTERY_VALUE_UNKNOWN &&
-			    battery->rate_now == 0) {
-				/* On charge but no current (0W/0mA). */
-				val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
-			} else {
+			/* Check the rate and capacity to validate the status. */
+			if (!acpi_battery_is_full(battery) ||
+			    (battery->rate_now != ACPI_BATTERY_VALUE_UNKNOWN &&
+			     battery->rate_now > 0)) {
 				val->intval = POWER_SUPPLY_STATUS_CHARGING;
+			} else {
+				/* Full and zero rate. */
+				val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
 			}
 		else if (battery->state & ACPI_BATTERY_STATE_CHARGE_LIMITING)
 			val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
@@ -483,6 +493,15 @@ static int acpi_battery_get_status(struct acpi_battery *battery)
 	return 0;
 }
 
+static void acpi_battery_clean_unprintable_chars(char *str, size_t length)
+{
+	for (unsigned int i = 0; i < length; i++) {
+		if (!isascii(str[i]) || !isprint(str[i])) {
+			str[i] = '\0';
+			break;
+		}
+	}
+}
 
 static int extract_battery_info(const int use_bix,
 			 struct acpi_battery *battery,
@@ -524,6 +543,10 @@ static int extract_battery_info(const int use_bix,
 	    battery->capacity_now > battery->full_charge_capacity)
 		battery->capacity_now = battery->full_charge_capacity;
 
+	if (!result)
+		acpi_battery_clean_unprintable_chars(battery->model_number,
+					ARRAY_SIZE(battery->model_number));
+
 	return result;
 }
 
@@ -668,9 +691,13 @@ static ssize_t acpi_battery_alarm_store(struct device *dev,
 {
 	unsigned long x;
 	struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
+	int err;
+
+	err = kstrtoul(buf, 10, &x);
+	if (err)
+		return err;
 
-	if (sscanf(buf, "%lu\n", &x) == 1)
-		battery->alarm = x/1000;
+	battery->alarm = x / 1000;
 	if (acpi_battery_present(battery))
 		acpi_battery_set_alarm(battery);
 	return count;
@@ -1059,14 +1086,24 @@ static void acpi_battery_refresh(struct acpi_battery *battery)
 }
 
 /* Driver Interface */
-static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
+static void acpi_battery_notification_worker(struct work_struct *work)
 {
-	struct acpi_battery *battery = data;
+	struct acpi_battery *battery = container_of(work, struct acpi_battery,
+						    acpi_notif_dwork.work);
 	struct acpi_device *device = battery->device;
+	u32 events[MAX_QUEUED_EVENTS];
 	struct power_supply *old;
+	unsigned int count, i;
 
 	guard(mutex)(&battery->update_lock);
 
+	count = kfifo_out(&battery->acpi_notif_fifo, events, sizeof(events));
+	count /= sizeof(events[0]);
+	if (!count)
+		return;
+
+	pr_debug("merged %u battery notifications within %dms\n", count, NOTIF_MERGING_MS);
+
 	old = battery->bat;
 	/*
 	 * On Acer Aspire V5-573G notifications are sometimes triggered too
@@ -1076,19 +1113,46 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
 	 */
 	if (battery_notification_delay_ms > 0)
 		msleep(battery_notification_delay_ms);
-	if (event == ACPI_BATTERY_NOTIFY_INFO)
-		acpi_battery_refresh(battery);
+
+	for (i = 0; i < count; i++) {
+		if (events[i] == ACPI_BATTERY_NOTIFY_INFO) {
+			acpi_battery_refresh(battery);
+			break;
+		}
+	}
+
 	acpi_battery_update(battery, false);
-	acpi_bus_generate_netlink_event(ACPI_BATTERY_CLASS,
-					dev_name(&device->dev), event,
-					acpi_battery_present(battery));
-	acpi_notifier_call_chain(ACPI_BATTERY_CLASS, acpi_device_bid(device),
-				 event, acpi_battery_present(battery));
+
+	for (i = 0; i < count; i++) {
+		acpi_bus_generate_netlink_event(ACPI_BATTERY_CLASS,
+						dev_name(&device->dev), events[i],
+						acpi_battery_present(battery));
+		acpi_notifier_call_chain(ACPI_BATTERY_CLASS, acpi_device_bid(device),
+					 events[i], acpi_battery_present(battery));
+	}
+
 	/* acpi_battery_update could remove power_supply object */
 	if (old && battery->bat)
 		power_supply_changed(battery->bat);
 }
 
+static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
+{
+	struct acpi_battery *battery = data;
+
+	guard(mutex)(&battery->update_lock);
+
+	if (kfifo_avail(&battery->acpi_notif_fifo) >= sizeof(event)) {
+		kfifo_in(&battery->acpi_notif_fifo, &event, sizeof(event));
+		schedule_delayed_work(&battery->acpi_notif_dwork,
+				      msecs_to_jiffies(NOTIF_MERGING_MS));
+
+		return;
+	}
+
+	pr_err_ratelimited("too many battery notifications within %dms\n", NOTIF_MERGING_MS);
+}
+
 static int battery_notify(struct notifier_block *nb,
 			  unsigned long mode, void *_unused)
 {
@@ -1231,6 +1295,29 @@ static int devm_acpi_battery_update_retry(struct device *dev,
 	return ret;
 }
 
+static void acpi_battery_notify_dwork_cleanup(void *data)
+{
+	struct acpi_battery *battery = data;
+
+	cancel_delayed_work_sync(&battery->acpi_notif_dwork);
+	kfifo_free(&battery->acpi_notif_fifo);
+}
+
+static int devm_acpi_battery_init_notify_dwork(struct device *dev,
+					       struct acpi_battery *battery)
+{
+	int ret;
+
+	INIT_DELAYED_WORK(&battery->acpi_notif_dwork, acpi_battery_notification_worker);
+
+	ret = kfifo_alloc(&battery->acpi_notif_fifo,
+			  MAX_QUEUED_EVENTS * sizeof(u32), GFP_KERNEL);
+	if (ret)
+		return ret;
+
+	return devm_add_action_or_reset(dev, acpi_battery_notify_dwork_cleanup, battery);
+}
+
 static int acpi_battery_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -1272,6 +1359,10 @@ static int acpi_battery_probe(struct platform_device *pdev)
 	if (result)
 		return result;
 
+	result = devm_acpi_battery_init_notify_dwork(dev, battery);
+	if (result)
+		return result;
+
 	result = devm_acpi_install_notify_handler(dev, ACPI_ALL_NOTIFY,
 						  acpi_battery_notify, battery);
 	if (result)
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index a30a904f6535..fae79cdd3610 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -620,41 +620,6 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
 	acpi_evaluate_ost(handle, type, ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL);
 }
 
-static void acpi_notify_device(acpi_handle handle, u32 event, void *data)
-{
-	struct acpi_device *device = data;
-	struct acpi_driver *acpi_drv = to_acpi_driver(device->dev.driver);
-
-	acpi_drv->ops.notify(device, event);
-}
-
-static int acpi_device_install_notify_handler(struct acpi_device *device,
-					      struct acpi_driver *acpi_drv)
-{
-	u32 type = acpi_drv->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS ?
-				ACPI_ALL_NOTIFY : ACPI_DEVICE_NOTIFY;
-	acpi_status status;
-
-	status = acpi_install_notify_handler(device->handle, type,
-					     acpi_notify_device, device);
-	if (ACPI_FAILURE(status))
-		return -EINVAL;
-
-	return 0;
-}
-
-static void acpi_device_remove_notify_handler(struct acpi_device *device,
-					      struct acpi_driver *acpi_drv)
-{
-	u32 type = acpi_drv->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS ?
-				ACPI_ALL_NOTIFY : ACPI_DEVICE_NOTIFY;
-
-	acpi_remove_notify_handler(device->handle, type,
-				   acpi_notify_device);
-
-	acpi_os_wait_events_complete();
-}
-
 int acpi_dev_install_notify_handler(struct acpi_device *adev,
 				    u32 handler_type,
 				    acpi_notify_handler handler, void *context)
@@ -1122,56 +1087,12 @@ bool acpi_driver_match_device(struct device *dev,
 EXPORT_SYMBOL_GPL(acpi_driver_match_device);
 
 /* --------------------------------------------------------------------------
-                              ACPI Driver Management
-   -------------------------------------------------------------------------- */
-
-/**
- * __acpi_bus_register_driver - register a driver with the ACPI bus
- * @driver: driver being registered
- * @owner: owning module/driver
- *
- * Registers a driver with the ACPI bus.  Searches the namespace for all
- * devices that match the driver's criteria and binds.  Returns zero for
- * success or a negative error status for failure.
- */
-int __acpi_bus_register_driver(struct acpi_driver *driver, struct module *owner)
-{
-	if (acpi_disabled)
-		return -ENODEV;
-	driver->drv.name = driver->name;
-	driver->drv.bus = &acpi_bus_type;
-	driver->drv.owner = owner;
-
-	return driver_register(&driver->drv);
-}
-
-EXPORT_SYMBOL(__acpi_bus_register_driver);
-
-/**
- * acpi_bus_unregister_driver - unregisters a driver with the ACPI bus
- * @driver: driver to unregister
- *
- * Unregisters a driver with the ACPI bus.  Searches the namespace for all
- * devices that match the driver's criteria and unbinds.
- */
-void acpi_bus_unregister_driver(struct acpi_driver *driver)
-{
-	driver_unregister(&driver->drv);
-}
-
-EXPORT_SYMBOL(acpi_bus_unregister_driver);
-
-/* --------------------------------------------------------------------------
                               ACPI Bus operations
    -------------------------------------------------------------------------- */
 
 static int acpi_bus_match(struct device *dev, const struct device_driver *drv)
 {
-	struct acpi_device *acpi_dev = to_acpi_device(dev);
-	const struct acpi_driver *acpi_drv = to_acpi_driver(drv);
-
-	return acpi_dev->flags.match_driver
-		&& !acpi_match_device_ids(acpi_dev, acpi_drv->ids);
+	return 0;
 }
 
 static int acpi_device_uevent(const struct device *dev, struct kobj_uevent_env *env)
@@ -1179,66 +1100,9 @@ static int acpi_device_uevent(const struct device *dev, struct kobj_uevent_env *
 	return __acpi_device_uevent_modalias(to_acpi_device(dev), env);
 }
 
-static int acpi_device_probe(struct device *dev)
-{
-	struct acpi_device *acpi_dev = to_acpi_device(dev);
-	struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver);
-	int ret;
-
-	if (acpi_dev->handler && !acpi_is_pnp_device(acpi_dev))
-		return -EINVAL;
-
-	if (!acpi_drv->ops.add)
-		return -ENOSYS;
-
-	ret = acpi_drv->ops.add(acpi_dev);
-	if (ret) {
-		acpi_dev->driver_data = NULL;
-		return ret;
-	}
-
-	pr_debug("Driver [%s] successfully bound to device [%s]\n",
-		 acpi_drv->name, acpi_dev->pnp.bus_id);
-
-	if (acpi_drv->ops.notify) {
-		ret = acpi_device_install_notify_handler(acpi_dev, acpi_drv);
-		if (ret) {
-			if (acpi_drv->ops.remove)
-				acpi_drv->ops.remove(acpi_dev);
-
-			acpi_dev->driver_data = NULL;
-			return ret;
-		}
-	}
-
-	pr_debug("Found driver [%s] for device [%s]\n", acpi_drv->name,
-		 acpi_dev->pnp.bus_id);
-
-	get_device(dev);
-	return 0;
-}
-
-static void acpi_device_remove(struct device *dev)
-{
-	struct acpi_device *acpi_dev = to_acpi_device(dev);
-	struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver);
-
-	if (acpi_drv->ops.notify)
-		acpi_device_remove_notify_handler(acpi_dev, acpi_drv);
-
-	if (acpi_drv->ops.remove)
-		acpi_drv->ops.remove(acpi_dev);
-
-	acpi_dev->driver_data = NULL;
-
-	put_device(dev);
-}
-
 const struct bus_type acpi_bus_type = {
 	.name		= "acpi",
 	.match		= acpi_bus_match,
-	.probe		= acpi_device_probe,
-	.remove		= acpi_device_remove,
 	.uevent		= acpi_device_uevent,
 };
 
diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index b6356476a46e..9f1e7c16a092 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -475,17 +475,29 @@ bool acpi_cpc_valid(void)
 }
 EXPORT_SYMBOL_GPL(acpi_cpc_valid);
 
-bool cppc_allow_fast_switch(void)
+bool cppc_allow_fast_switch(const struct cpumask *cpus)
 {
-	struct cpc_register_resource *desired_reg;
+	struct cpc_register_resource *desired_reg, *min_reg, *max_reg;
 	struct cpc_desc *cpc_ptr;
 	int cpu;
 
-	for_each_online_cpu(cpu) {
+	for_each_cpu(cpu, cpus) {
 		cpc_ptr = per_cpu(cpc_desc_ptr, cpu);
+		if (!cpc_ptr)
+			return false;
 		desired_reg = &cpc_ptr->cpc_regs[DESIRED_PERF];
-		if (!CPC_IN_SYSTEM_MEMORY(desired_reg) &&
-				!CPC_IN_SYSTEM_IO(desired_reg))
+		min_reg = &cpc_ptr->cpc_regs[MIN_PERF];
+		max_reg = &cpc_ptr->cpc_regs[MAX_PERF];
+
+		if (!CPC_SUPPORTED(desired_reg) ||
+		    (!CPC_IN_SYSTEM_MEMORY(desired_reg) &&
+		     !CPC_IN_SYSTEM_IO(desired_reg)) ||
+		    (CPC_SUPPORTED(min_reg) &&
+		     !CPC_IN_SYSTEM_MEMORY(min_reg) &&
+		     !CPC_IN_SYSTEM_IO(min_reg)) ||
+		    (CPC_SUPPORTED(max_reg) &&
+		     !CPC_IN_SYSTEM_MEMORY(max_reg) &&
+		     !CPC_IN_SYSTEM_IO(max_reg)))
 			return false;
 	}
 
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 64ad4cfa6208..a89f10256dbb 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -1510,6 +1510,24 @@ static bool install_gpio_irq_event_handler(struct acpi_ec *ec)
 				    IRQF_SHARED | IRQF_ONESHOT, "ACPI EC", ec) >= 0;
 }
 
+static int ec_prepare_gpio_irq(struct acpi_ec *ec, struct acpi_device *device)
+{
+	int irq;
+
+	if (!device || ec->gpe >= 0 || ec->irq >= 0)
+		return 0;
+
+	/* ACPI reduced hardware platforms use a GpioInt from _CRS. */
+	irq = acpi_dev_gpio_irq_get(device, 0);
+	if (irq == -EPROBE_DEFER)
+		return irq;
+
+	if (irq >= 0)
+		ec->irq = irq;
+
+	return 0;
+}
+
 /**
  * ec_install_handlers - Install service callbacks and register query methods.
  * @ec: Target EC.
@@ -1524,7 +1542,6 @@ static bool install_gpio_irq_event_handler(struct acpi_ec *ec)
  * Return:
  * -ENODEV if the address space handler cannot be installed, which means
  *  "unable to handle transactions",
- * -EPROBE_DEFER if GPIO IRQ acquisition needs to be deferred,
  * or 0 (success) otherwise.
  */
 static int ec_install_handlers(struct acpi_ec *ec, struct acpi_device *device,
@@ -1557,19 +1574,6 @@ static int ec_install_handlers(struct acpi_ec *ec, struct acpi_device *device,
 	if (!device)
 		return 0;
 
-	if (ec->gpe < 0) {
-		/* ACPI reduced hardware platforms use a GpioInt from _CRS. */
-		int irq = acpi_dev_gpio_irq_get(device, 0);
-		/*
-		 * Bail out right away for deferred probing or complete the
-		 * initialization regardless of any other errors.
-		 */
-		if (irq == -EPROBE_DEFER)
-			return -EPROBE_DEFER;
-		else if (irq >= 0)
-			ec->irq = irq;
-	}
-
 	if (!test_bit(EC_FLAGS_QUERY_METHODS_INSTALLED, &ec->flags)) {
 		/* Find and register all query methods */
 		acpi_walk_namespace(ACPI_TYPE_METHOD, ec->handle, 1,
@@ -1647,6 +1651,14 @@ static int acpi_ec_setup(struct acpi_ec *ec, struct acpi_device *device, bool ca
 {
 	int ret;
 
+	/*
+	 * GPIO IRQ lookup can defer.  Do it before publishing the EC
+	 * OpRegion to AML to avoid a spurious _REG(disconnect).
+	 */
+	ret = ec_prepare_gpio_irq(ec, device);
+	if (ret)
+		return ret;
+
 	/* First EC capable of handling transactions */
 	if (!first_ec)
 		first_ec = ec;
diff --git a/drivers/acpi/fan.h b/drivers/acpi/fan.h
index 97ce3212edf3..e20d6ad9df80 100644
--- a/drivers/acpi/fan.h
+++ b/drivers/acpi/fan.h
@@ -10,20 +10,21 @@
 #ifndef _ACPI_FAN_H_
 #define _ACPI_FAN_H_
 
-#include <linux/kconfig.h>
+#include <linux/device.h>
 #include <linux/limits.h>
+#include <linux/types.h>
 
-#define ACPI_FAN_DEVICE_IDS	\
-	{"INT3404", }, /* Fan */ \
-	{"INTC1044", }, /* Fan for Tiger Lake generation */ \
-	{"INTC1048", }, /* Fan for Alder Lake generation */ \
-	{"INTC1063", }, /* Fan for Meteor Lake generation */ \
-	{"INTC106A", }, /* Fan for Lunar Lake generation */ \
-	{"INTC10A2", }, /* Fan for Raptor Lake generation */ \
-	{"INTC10D6", }, /* Fan for Panther Lake generation */ \
-	{"INTC10FE", }, /* Fan for Wildcat Lake generation */ \
-	{"INTC10F5", }, /* Fan for Nova Lake generation */ \
-	{"PNP0C0B", } /* Generic ACPI fan */
+#define ACPI_FAN_DEVICE_IDS						\
+	{ .id = "INT3404" },	/* Fan */				\
+	{ .id = "INTC1044" },	/* Fan for Tiger Lake generation */	\
+	{ .id = "INTC1048" },	/* Fan for Alder Lake generation */	\
+	{ .id = "INTC1063" },	/* Fan for Meteor Lake generation */	\
+	{ .id = "INTC106A" },	/* Fan for Lunar Lake generation */	\
+	{ .id = "INTC10A2" },	/* Fan for Raptor Lake generation */	\
+	{ .id = "INTC10D6" },	/* Fan for Panther Lake generation */	\
+	{ .id = "INTC10FE" },	/* Fan for Wildcat Lake generation */	\
+	{ .id = "INTC10F5" },	/* Fan for Nova Lake generation */	\
+	{ .id = "PNP0C0B" }	/* Generic ACPI fan */
 
 #define ACPI_FPS_NAME_LEN	20
 
@@ -69,7 +70,7 @@ struct acpi_fan {
 
 /**
  * acpi_fan_speed_valid - Check if fan speed value is valid
- * @speeed: Speed value returned by the ACPI firmware
+ * @speed: Speed value returned by the ACPI firmware
  *
  * Check if the fan speed value returned by the ACPI firmware is valid. This function is
  * necessary as ACPI firmware implementations can return 0xFFFFFFFF to signal that the
diff --git a/drivers/acpi/fan_core.c b/drivers/acpi/fan_core.c
index fb08b8549ed7..624d0736b581 100644
--- a/drivers/acpi/fan_core.c
+++ b/drivers/acpi/fan_core.c
@@ -489,26 +489,6 @@ static void acpi_fan_notify_handler(acpi_handle handle, u32 event, void *context
 	}
 }
 
-static void acpi_fan_notify_remove(void *data)
-{
-	struct acpi_fan *fan = data;
-
-	acpi_remove_notify_handler(fan->handle, ACPI_DEVICE_NOTIFY, acpi_fan_notify_handler);
-}
-
-static int devm_acpi_fan_notify_init(struct device *dev)
-{
-	struct acpi_fan *fan = dev_get_drvdata(dev);
-	acpi_status status;
-
-	status = acpi_install_notify_handler(fan->handle, ACPI_DEVICE_NOTIFY,
-					     acpi_fan_notify_handler, dev);
-	if (ACPI_FAILURE(status))
-		return -EIO;
-
-	return devm_add_action_or_reset(dev, acpi_fan_notify_remove, fan);
-}
-
 static int acpi_fan_probe(struct platform_device *pdev)
 {
 	int result = 0;
@@ -556,7 +536,10 @@ static int acpi_fan_probe(struct platform_device *pdev)
 		if (result)
 			return result;
 
-		result = devm_acpi_fan_notify_init(&pdev->dev);
+		result = devm_acpi_install_notify_handler(&pdev->dev,
+							  ACPI_DEVICE_NOTIFY,
+							  acpi_fan_notify_handler,
+							  &pdev->dev);
 		if (result)
 			return result;
 
diff --git a/drivers/acpi/irq.c b/drivers/acpi/irq.c
index d1595156c86a..e4293458bf61 100644
--- a/drivers/acpi/irq.c
+++ b/drivers/acpi/irq.c
@@ -13,6 +13,7 @@
 enum acpi_irq_model_id acpi_irq_model;
 
 static acpi_gsi_domain_disp_fn acpi_get_gsi_domain_id;
+static acpi_gsi_handle_disp_fn acpi_get_gsi_handle;
 static u32 (*acpi_gsi_to_irq_fallback)(u32 gsi);
 
 /**
@@ -321,15 +322,19 @@ const struct cpumask *acpi_irq_get_affinity(acpi_handle handle,
 
 /**
  * acpi_set_irq_model - Setup the GSI irqdomain information
- * @model: the value assigned to acpi_irq_model
- * @fn: a dispatcher function that will return the domain fwnode
- *	for a given GSI
+ * @model:	the value assigned to acpi_irq_model
+ * @fn:		a dispatcher function that will return the domain fwnode
+ *		for a given GSI
+ * @gsi_dep_fn: a function to retrieve the acpi_handle a GSI interrupt is
+ *		dependent on
+ *
  */
 void __init acpi_set_irq_model(enum acpi_irq_model_id model,
-			       acpi_gsi_domain_disp_fn fn)
+			       acpi_gsi_domain_disp_fn fn, acpi_gsi_handle_disp_fn gsi_dep_fn)
 {
 	acpi_irq_model = model;
 	acpi_get_gsi_domain_id = fn;
+	acpi_get_gsi_handle = gsi_dep_fn;
 }
 
 /*
@@ -385,3 +390,162 @@ struct irq_domain *acpi_irq_create_hierarchy(unsigned int flags,
 					   host_data);
 }
 EXPORT_SYMBOL_GPL(acpi_irq_create_hierarchy);
+
+struct acpi_irq_dep_ctx {
+	int		rc;
+	unsigned int	index;
+	acpi_handle	handle;
+};
+
+static acpi_status acpi_irq_get_parent(struct acpi_resource *ares, void *context)
+{
+	struct acpi_irq_dep_ctx *ctx = context;
+	struct acpi_resource_irq *irq;
+	struct acpi_resource_extended_irq *eirq;
+
+	switch (ares->type) {
+	case ACPI_RESOURCE_TYPE_IRQ:
+		irq = &ares->data.irq;
+		if (ctx->index >= irq->interrupt_count) {
+			ctx->index -= irq->interrupt_count;
+			return AE_OK;
+		}
+		ctx->handle = acpi_get_gsi_handle(irq->interrupts[ctx->index]);
+		ctx->rc = 0;
+		return AE_CTRL_TERMINATE;
+	case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
+		eirq = &ares->data.extended_irq;
+		if (eirq->producer_consumer == ACPI_PRODUCER)
+			return AE_OK;
+
+		if (ctx->index >= eirq->interrupt_count) {
+			ctx->index -= eirq->interrupt_count;
+			return AE_OK;
+		}
+
+		/* Support GSIs only */
+		if (eirq->resource_source.string_length)
+			return AE_OK;
+
+		ctx->handle = acpi_get_gsi_handle(eirq->interrupts[ctx->index]);
+		ctx->rc = 0;
+		return AE_CTRL_TERMINATE;
+	}
+
+	return AE_OK;
+}
+
+static int acpi_irq_get_dep(acpi_handle handle, unsigned int index, acpi_handle *gsi_handle)
+{
+	struct acpi_irq_dep_ctx ctx = {-EINVAL, index, NULL};
+
+	if (!gsi_handle)
+		return -EINVAL;
+
+	acpi_walk_resources(handle, METHOD_NAME__CRS, acpi_irq_get_parent, &ctx);
+	*gsi_handle = ctx.handle;
+
+	return ctx.rc;
+}
+
+static bool acpi_prt_entry_valid(void *prt_entry)
+{
+	struct acpi_pci_routing_table *entry = prt_entry;
+
+	return entry && entry->length > 0;
+}
+
+static void *acpi_prt_next_entry(void *prt_entry)
+{
+	struct acpi_pci_routing_table *entry = prt_entry;
+
+	return prt_entry + entry->length;
+}
+
+static u32 acpi_add_prt_dep(acpi_handle handle)
+{
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	struct acpi_pci_routing_table *entry;
+	struct acpi_handle_list dep_devices;
+	acpi_handle gsi_handle;
+	acpi_handle link_handle;
+	acpi_status status;
+	u32 count = 0;
+
+	status = acpi_get_irq_routing_table(handle, &buffer);
+	if (ACPI_FAILURE(status)) {
+		acpi_handle_err(handle, "failed to get IRQ routing table\n");
+		kfree(buffer.pointer);
+		return 0;
+	}
+
+	entry = buffer.pointer;
+	for (; acpi_prt_entry_valid(entry); entry = acpi_prt_next_entry(entry)) {
+		if (entry->source[0]) {
+			status = acpi_get_handle(handle, entry->source, &link_handle);
+			if (ACPI_FAILURE(status))
+				continue;
+			dep_devices.count = 1;
+			dep_devices.handles = kcalloc(1, sizeof(*dep_devices.handles), GFP_KERNEL);
+			if (!dep_devices.handles) {
+				acpi_handle_err(handle, "failed to allocate memory\n");
+				continue;
+			}
+
+			dep_devices.handles[0] = link_handle;
+			count += acpi_scan_add_dep(handle, &dep_devices);
+		} else {
+			gsi_handle = acpi_get_gsi_handle(entry->source_index);
+			if (!gsi_handle)
+				continue;
+			dep_devices.count = 1;
+			dep_devices.handles = kcalloc(1, sizeof(*dep_devices.handles), GFP_KERNEL);
+			if (!dep_devices.handles) {
+				acpi_handle_err(handle, "failed to allocate memory\n");
+				continue;
+			}
+
+			dep_devices.handles[0] = gsi_handle;
+			count += acpi_scan_add_dep(handle, &dep_devices);
+		}
+	}
+
+	kfree(buffer.pointer);
+	return count;
+}
+
+static u32 acpi_add_irq_dep(acpi_handle handle)
+{
+	struct acpi_handle_list dep_devices;
+	acpi_handle gsi_handle;
+	u32 count = 0;
+	int i;
+
+	for (i = 0; !acpi_irq_get_dep(handle, i, &gsi_handle); i++) {
+		if (!gsi_handle)
+			continue;
+
+		dep_devices.count = 1;
+		dep_devices.handles = kcalloc(1, sizeof(*dep_devices.handles), GFP_KERNEL);
+		if (!dep_devices.handles) {
+			acpi_handle_err(handle, "failed to allocate memory\n");
+			continue;
+		}
+
+		dep_devices.handles[0] = gsi_handle;
+		count += acpi_scan_add_dep(handle, &dep_devices);
+	}
+
+	return count;
+}
+
+u32 acpi_irq_add_auto_dep(acpi_handle handle)
+{
+	if (!acpi_get_gsi_handle)
+		return 0;
+
+	if (acpi_has_method(handle, "_PRT"))
+		return acpi_add_prt_dep(handle);
+
+	return acpi_add_irq_dep(handle);
+}
diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c
index 62d4a8df0b8c..5c407dc6401e 100644
--- a/drivers/acpi/numa/srat.c
+++ b/drivers/acpi/numa/srat.c
@@ -399,8 +399,6 @@ acpi_parse_memory_affinity(union acpi_subtable_headers *header,
 		goto out_err_bad_srat;
 	}
 
-	node_set(node, numa_nodes_parsed);
-
 	pr_info("SRAT: Node %u PXM %u [mem %#010Lx-%#010Lx]%s%s\n",
 		node, pxm,
 		(unsigned long long) start, (unsigned long long) end - 1,
diff --git a/drivers/acpi/nvs.c b/drivers/acpi/nvs.c
index 6eaad7dd0241..12aee4102696 100644
--- a/drivers/acpi/nvs.c
+++ b/drivers/acpi/nvs.c
@@ -133,7 +133,7 @@ void suspend_nvs_free(void)
 
 	list_for_each_entry(entry, &nvs_list, node)
 		if (entry->data) {
-			free_page((unsigned long)entry->data);
+			kfree(entry->data);
 			entry->data = NULL;
 			if (entry->kaddr) {
 				if (entry->unmap) {
@@ -156,7 +156,7 @@ int suspend_nvs_alloc(void)
 	struct nvs_page *entry;
 
 	list_for_each_entry(entry, &nvs_list, node) {
-		entry->data = (void *)__get_free_page(GFP_KERNEL);
+		entry->data = kmalloc(PAGE_SIZE, GFP_KERNEL);
 		if (!entry->data) {
 			suspend_nvs_free();
 			return -ENOMEM;
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 4c06c3ffd0cb..6f78f96332ea 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -8,6 +8,7 @@
 
 #define pr_fmt(fmt) "ACPI: " fmt
 
+#include <linux/cleanup.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
@@ -292,41 +293,37 @@ struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle)
 EXPORT_SYMBOL_GPL(acpi_pci_find_root);
 
 /**
- * acpi_get_pci_dev - convert ACPI CA handle to struct pci_dev
- * @handle: the handle in question
+ * acpi_dev_get_pci_dev - Get a struct pci_dev for a given ACPI device
+ * @adev: Target ACPI device.
  *
- * Given an ACPI CA handle, the desired PCI device is located in the
- * list of PCI devices.
+ * Find the PCI device associated with @adev, if any, and bump up its reference
+ * counter.
  *
- * If the device is found, its reference count is increased and this
- * function returns a pointer to its data structure.  The caller must
- * decrement the reference count by calling pci_dev_put().
- * If no device is found, %NULL is returned.
+ * Callers are responsible for dropping the PCI device reference obtained by
+ * this function.
+ *
+ * Return: The struct pci_dev pointer of a reference-counted PCI device on
+ * success or NULL on failure.
  */
-struct pci_dev *acpi_get_pci_dev(acpi_handle handle)
+struct pci_dev *acpi_dev_get_pci_dev(struct acpi_device *adev)
 {
-	struct acpi_device *adev = acpi_fetch_acpi_dev(handle);
 	struct acpi_device_physical_node *pn;
-	struct pci_dev *pci_dev = NULL;
 
 	if (!adev)
 		return NULL;
 
-	mutex_lock(&adev->physical_node_lock);
+	guard(mutex)(&adev->physical_node_lock);
 
 	list_for_each_entry(pn, &adev->physical_node_list, node) {
 		if (dev_is_pci(pn->dev)) {
 			get_device(pn->dev);
-			pci_dev = to_pci_dev(pn->dev);
-			break;
+			return to_pci_dev(pn->dev);
 		}
 	}
 
-	mutex_unlock(&adev->physical_node_lock);
-
-	return pci_dev;
+	return NULL;
 }
-EXPORT_SYMBOL_GPL(acpi_get_pci_dev);
+EXPORT_SYMBOL_GPL(acpi_dev_get_pci_dev);
 
 /**
  * acpi_pci_osc_control_set - Request control of PCI root _OSC features.
@@ -725,7 +722,6 @@ static int acpi_pci_root_add(struct acpi_device *device,
 		dev_err(&device->dev,
 			"Bus %04x:%02x not present in PCI namespace\n",
 			root->segment, (unsigned int)root->secondary.start);
-		device->driver_data = NULL;
 		result = -ENODEV;
 		goto remove_dmar;
 	}
@@ -765,6 +761,7 @@ remove_dmar:
 	if (hotadd)
 		dmar_device_remove(handle);
 end:
+	device->driver_data = NULL;
 	kfree(root);
 	return result;
 }
@@ -788,6 +785,7 @@ static void acpi_pci_root_remove(struct acpi_device *device)
 
 	pci_unlock_rescan_remove();
 
+	device->driver_data = NULL;
 	kfree(root);
 }
 
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index d4131c184be8..23a4e207a01e 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -954,7 +954,6 @@ struct acpi_device *acpi_add_power_resource(acpi_handle handle)
 	INIT_LIST_HEAD(&resource->list_node);
 	INIT_LIST_HEAD(&resource->dependents);
 	device->power.state = ACPI_STATE_UNKNOWN;
-	device->flags.match_driver = true;
 
 	/* Evaluate the object to get the system level and resource order. */
 	status = acpi_evaluate_object(handle, NULL, NULL, &buffer);
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index a4498357bd16..3bf076c150fa 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -336,11 +336,26 @@ int acpi_get_cpuid(acpi_handle handle, int type, u32 acpi_id)
 EXPORT_SYMBOL_GPL(acpi_get_cpuid);
 
 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
-static int get_ioapic_id(struct acpi_subtable_header *entry, u32 gsi_base,
+static bool madt_entry_is_valid(struct acpi_subtable_header *entry,
+				unsigned long end)
+{
+	unsigned long start = (unsigned long)entry;
+
+	if (start >= end || end - start < sizeof(*entry))
+		return false;
+
+	return entry->length >= sizeof(*entry) && entry->length <= end - start;
+}
+
+static int get_ioapic_id(struct acpi_subtable_header *entry,
+			 const unsigned long end, u32 gsi_base,
 			 u64 *phys_addr, int *ioapic_id)
 {
 	struct acpi_madt_io_apic *ioapic = (struct acpi_madt_io_apic *)entry;
 
+	if (!madt_entry_is_valid(entry, end) || BAD_MADT_ENTRY(ioapic, end))
+		return 0;
+
 	if (ioapic->global_irq_base != gsi_base)
 		return 0;
 
@@ -361,17 +376,19 @@ static int parse_madt_ioapic_entry(u32 gsi_base, u64 *phys_addr)
 		return apic_id;
 
 	entry = (unsigned long)madt;
+	if (madt->header.length < sizeof(*madt))
+		return apic_id;
 	madt_end = entry + madt->header.length;
 
 	/* Parse all entries looking for a match. */
 	entry += sizeof(struct acpi_table_madt);
-	while (entry + sizeof(struct acpi_subtable_header) < madt_end) {
+	while (madt_entry_is_valid((struct acpi_subtable_header *)entry,
+				   madt_end)) {
 		hdr = (struct acpi_subtable_header *)entry;
 		if (hdr->type == ACPI_MADT_TYPE_IO_APIC &&
-		    get_ioapic_id(hdr, gsi_base, phys_addr, &apic_id))
+		    get_ioapic_id(hdr, madt_end, gsi_base, phys_addr, &apic_id))
 			break;
-		else
-			entry += hdr->length;
+		entry += hdr->length;
 	}
 
 	return apic_id;
@@ -398,7 +415,9 @@ static int parse_mat_ioapic_entry(acpi_handle handle, u32 gsi_base,
 
 	header = (struct acpi_subtable_header *)obj->buffer.pointer;
 	if (header->type == ACPI_MADT_TYPE_IO_APIC)
-		get_ioapic_id(header, gsi_base, phys_addr, &apic_id);
+		get_ioapic_id(header,
+			      (unsigned long)header + obj->buffer.length,
+			      gsi_base, phys_addr, &apic_id);
 
 exit:
 	kfree(buffer.pointer);
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 4482cf28f56a..e113bcbbb882 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -853,223 +853,6 @@ static int acpi_processor_setup_cstates(struct acpi_processor *pr)
 
 #endif /* CONFIG_ACPI_PROCESSOR_CSTATE */
 
-struct acpi_lpi_states_array {
-	unsigned int size;
-	unsigned int composite_states_size;
-	struct acpi_lpi_state *entries;
-	struct acpi_lpi_state *composite_states[ACPI_PROCESSOR_MAX_POWER];
-};
-
-static int obj_get_integer(union acpi_object *obj, u32 *value)
-{
-	if (obj->type != ACPI_TYPE_INTEGER)
-		return -EINVAL;
-
-	*value = obj->integer.value;
-	return 0;
-}
-
-static int acpi_processor_evaluate_lpi(acpi_handle handle,
-				       struct acpi_lpi_states_array *info)
-{
-	acpi_status status;
-	int ret = 0;
-	int pkg_count, state_idx = 1, loop;
-	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
-	union acpi_object *lpi_data;
-	struct acpi_lpi_state *lpi_state;
-
-	status = acpi_evaluate_object(handle, "_LPI", NULL, &buffer);
-	if (ACPI_FAILURE(status)) {
-		acpi_handle_debug(handle, "No _LPI, giving up\n");
-		return -ENODEV;
-	}
-
-	lpi_data = buffer.pointer;
-
-	/* There must be at least 4 elements = 3 elements + 1 package */
-	if (!lpi_data || lpi_data->type != ACPI_TYPE_PACKAGE ||
-	    lpi_data->package.count < 4) {
-		pr_debug("not enough elements in _LPI\n");
-		ret = -ENODATA;
-		goto end;
-	}
-
-	pkg_count = lpi_data->package.elements[2].integer.value;
-
-	/* Validate number of power states. */
-	if (pkg_count < 1 || pkg_count != lpi_data->package.count - 3) {
-		pr_debug("count given by _LPI is not valid\n");
-		ret = -ENODATA;
-		goto end;
-	}
-
-	lpi_state = kzalloc_objs(*lpi_state, pkg_count);
-	if (!lpi_state) {
-		ret = -ENOMEM;
-		goto end;
-	}
-
-	info->size = pkg_count;
-	info->entries = lpi_state;
-
-	/* LPI States start at index 3 */
-	for (loop = 3; state_idx <= pkg_count; loop++, state_idx++, lpi_state++) {
-		union acpi_object *element, *pkg_elem, *obj;
-
-		element = &lpi_data->package.elements[loop];
-		if (element->type != ACPI_TYPE_PACKAGE || element->package.count < 7)
-			continue;
-
-		pkg_elem = element->package.elements;
-
-		obj = pkg_elem + 6;
-		if (obj->type == ACPI_TYPE_BUFFER) {
-			struct acpi_power_register *reg;
-
-			reg = (struct acpi_power_register *)obj->buffer.pointer;
-			if (reg->space_id != ACPI_ADR_SPACE_SYSTEM_IO &&
-			    reg->space_id != ACPI_ADR_SPACE_FIXED_HARDWARE)
-				continue;
-
-			lpi_state->address = reg->address;
-			lpi_state->entry_method =
-				reg->space_id == ACPI_ADR_SPACE_FIXED_HARDWARE ?
-				ACPI_CSTATE_FFH : ACPI_CSTATE_SYSTEMIO;
-		} else if (obj->type == ACPI_TYPE_INTEGER) {
-			lpi_state->entry_method = ACPI_CSTATE_INTEGER;
-			lpi_state->address = obj->integer.value;
-		} else {
-			pr_debug("Entry method of state-%d is invalid, disable it.\n",
-				 state_idx);
-			continue;
-		}
-
-		/* elements[7,8] skipped for now i.e. Residency/Usage counter*/
-
-		obj = pkg_elem + 9;
-		if (obj->type == ACPI_TYPE_STRING)
-			strscpy(lpi_state->desc, obj->string.pointer,
-				ACPI_CX_DESC_LEN);
-
-		lpi_state->index = state_idx;
-		if (obj_get_integer(pkg_elem + 0, &lpi_state->min_residency)) {
-			pr_debug("No min. residency found, assuming 10 us\n");
-			lpi_state->min_residency = 10;
-		}
-
-		if (obj_get_integer(pkg_elem + 1, &lpi_state->wake_latency)) {
-			pr_debug("No wakeup residency found, assuming 10 us\n");
-			lpi_state->wake_latency = 10;
-		}
-
-		if (obj_get_integer(pkg_elem + 2, &lpi_state->flags))
-			lpi_state->flags = 0;
-
-		if (obj_get_integer(pkg_elem + 3, &lpi_state->arch_flags))
-			lpi_state->arch_flags = 0;
-
-		if (obj_get_integer(pkg_elem + 4, &lpi_state->res_cnt_freq))
-			lpi_state->res_cnt_freq = 1;
-
-		if (obj_get_integer(pkg_elem + 5, &lpi_state->enable_parent_state))
-			lpi_state->enable_parent_state = 0;
-	}
-
-	acpi_handle_debug(handle, "Found %d power states\n", state_idx);
-end:
-	kfree(buffer.pointer);
-	return ret;
-}
-
-/**
- * combine_lpi_states - combine local and parent LPI states to form a composite LPI state
- *
- * @local: local LPI state
- * @parent: parent LPI state
- * @result: composite LPI state
- */
-static bool combine_lpi_states(struct acpi_lpi_state *local,
-			       struct acpi_lpi_state *parent,
-			       struct acpi_lpi_state *result)
-{
-	if (parent->entry_method == ACPI_CSTATE_INTEGER) {
-		if (!parent->address) /* 0 means autopromotable */
-			return false;
-		result->address = local->address + parent->address;
-	} else {
-		result->address = parent->address;
-	}
-
-	result->min_residency = max(local->min_residency, parent->min_residency);
-	result->wake_latency = local->wake_latency + parent->wake_latency;
-	result->enable_parent_state = parent->enable_parent_state;
-	result->entry_method = local->entry_method;
-
-	result->flags = parent->flags;
-	result->arch_flags = parent->arch_flags;
-	result->index = parent->index;
-
-	scnprintf(result->desc, ACPI_CX_DESC_LEN, "%s+%s", local->desc, parent->desc);
-	return true;
-}
-
-#define ACPI_LPI_STATE_FLAGS_ENABLED			BIT(0)
-
-static void stash_composite_state(struct acpi_lpi_states_array *curr_level,
-				  struct acpi_lpi_state *t)
-{
-	curr_level->composite_states[curr_level->composite_states_size++] = t;
-}
-
-static unsigned int flatten_lpi_states(struct acpi_processor *pr,
-				       unsigned int flat_state_cnt,
-				       struct acpi_lpi_states_array *curr_level,
-				       struct acpi_lpi_states_array *prev_level)
-{
-	int i, j, state_count = curr_level->size;
-	struct acpi_lpi_state *p, *t = curr_level->entries;
-
-	curr_level->composite_states_size = 0;
-	for (j = 0; j < state_count; j++, t++) {
-		struct acpi_lpi_state *flpi;
-
-		if (!(t->flags & ACPI_LPI_STATE_FLAGS_ENABLED))
-			continue;
-
-		if (flat_state_cnt >= ACPI_PROCESSOR_MAX_POWER) {
-			pr_warn("Limiting number of LPI states to max (%d)\n",
-				ACPI_PROCESSOR_MAX_POWER);
-			pr_warn("Please increase ACPI_PROCESSOR_MAX_POWER if needed.\n");
-			break;
-		}
-
-		flpi = &pr->power.lpi_states[flat_state_cnt];
-
-		if (!prev_level) { /* leaf/processor node */
-			memcpy(flpi, t, sizeof(*t));
-			stash_composite_state(curr_level, flpi);
-			flat_state_cnt++;
-			continue;
-		}
-
-		for (i = 0; i < prev_level->composite_states_size; i++) {
-			p = prev_level->composite_states[i];
-			if (t->index <= p->enable_parent_state &&
-			    combine_lpi_states(p, t, flpi)) {
-				stash_composite_state(curr_level, flpi);
-				flat_state_cnt++;
-				flpi++;
-				if (flat_state_cnt >= ACPI_PROCESSOR_MAX_POWER)
-					break;
-			}
-		}
-	}
-
-	kfree(curr_level->entries);
-	return flat_state_cnt;
-}
-
 int __weak acpi_processor_ffh_lpi_probe(unsigned int cpu)
 {
 	return -EOPNOTSUPP;
@@ -1077,64 +860,16 @@ int __weak acpi_processor_ffh_lpi_probe(unsigned int cpu)
 
 static int acpi_processor_get_lpi_info(struct acpi_processor *pr)
 {
-	int ret, i;
-	acpi_status status;
-	acpi_handle handle = pr->handle, pr_ahandle;
-	struct acpi_device *d = NULL;
-	struct acpi_lpi_states_array info[2], *tmp, *prev, *curr;
-	unsigned int state_count;
+	int ret;
 
 	/* make sure our architecture has support */
 	ret = acpi_processor_ffh_lpi_probe(pr->id);
 	if (ret == -EOPNOTSUPP)
 		return ret;
 
-	if (!osc_pc_lpi_support_confirmed)
-		return -EOPNOTSUPP;
-
-	if (!acpi_has_method(handle, "_LPI"))
-		return -EINVAL;
-
-	prev = &info[0];
-	curr = &info[1];
-	handle = pr->handle;
-	ret = acpi_processor_evaluate_lpi(handle, prev);
+	ret = acpi_processor_extract_lpi_info(pr->handle, &pr->power, false);
 	if (ret)
 		return ret;
-	state_count = flatten_lpi_states(pr, 0, prev, NULL);
-
-	status = acpi_get_parent(handle, &pr_ahandle);
-	while (ACPI_SUCCESS(status)) {
-		d = acpi_fetch_acpi_dev(pr_ahandle);
-		if (!d)
-			break;
-
-		handle = pr_ahandle;
-
-		if (strcmp(acpi_device_hid(d), ACPI_PROCESSOR_CONTAINER_HID))
-			break;
-
-		/* can be optional ? */
-		if (!acpi_has_method(handle, "_LPI"))
-			break;
-
-		ret = acpi_processor_evaluate_lpi(handle, curr);
-		if (ret)
-			break;
-
-		/* flatten all the LPI states in this level of hierarchy */
-		state_count = flatten_lpi_states(pr, state_count, curr, prev);
-
-		tmp = prev, prev = curr, curr = tmp;
-
-		status = acpi_get_parent(handle, &pr_ahandle);
-	}
-
-	/* reset the index after flattening */
-	for (i = 0; i < state_count; i++)
-		pr->power.lpi_states[i].index = i;
-
-	pr->power.count = state_count;
 
 	/* Tell driver that _LPI is supported. */
 	pr->flags.has_lpi = 1;
diff --git a/drivers/acpi/riscv/irq.c b/drivers/acpi/riscv/irq.c
index 9b88d0993e88..da2c42e0ebfd 100644
--- a/drivers/acpi/riscv/irq.c
+++ b/drivers/acpi/riscv/irq.c
@@ -23,12 +23,6 @@ struct riscv_ext_intc_list {
 	struct list_head	list;
 };
 
-struct acpi_irq_dep_ctx {
-	int		rc;
-	unsigned int	index;
-	acpi_handle	handle;
-};
-
 LIST_HEAD(ext_intc_list);
 
 static int irqchip_cmp_func(const void *in0, const void *in1)
@@ -254,7 +248,7 @@ void __init riscv_acpi_init_gsi_mapping(void)
 	acpi_get_devices("RSCV0006", riscv_acpi_create_gsi_map_smsi, NULL, NULL);
 }
 
-static acpi_handle riscv_acpi_get_gsi_handle(u32 gsi)
+acpi_handle acpi_get_riscv_gsi_handle(u32 gsi)
 {
 	struct riscv_ext_intc_list *ext_intc_element;
 	struct list_head *i;
@@ -269,138 +263,7 @@ static acpi_handle riscv_acpi_get_gsi_handle(u32 gsi)
 	return NULL;
 }
 
-static acpi_status riscv_acpi_irq_get_parent(struct acpi_resource *ares, void *context)
-{
-	struct acpi_irq_dep_ctx *ctx = context;
-	struct acpi_resource_irq *irq;
-	struct acpi_resource_extended_irq *eirq;
-
-	switch (ares->type) {
-	case ACPI_RESOURCE_TYPE_IRQ:
-		irq = &ares->data.irq;
-		if (ctx->index >= irq->interrupt_count) {
-			ctx->index -= irq->interrupt_count;
-			return AE_OK;
-		}
-		ctx->handle = riscv_acpi_get_gsi_handle(irq->interrupts[ctx->index]);
-		return AE_CTRL_TERMINATE;
-	case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
-		eirq = &ares->data.extended_irq;
-		if (eirq->producer_consumer == ACPI_PRODUCER)
-			return AE_OK;
-
-		if (ctx->index >= eirq->interrupt_count) {
-			ctx->index -= eirq->interrupt_count;
-			return AE_OK;
-		}
-
-		/* Support GSIs only */
-		if (eirq->resource_source.string_length)
-			return AE_OK;
-
-		ctx->handle = riscv_acpi_get_gsi_handle(eirq->interrupts[ctx->index]);
-		return AE_CTRL_TERMINATE;
-	}
-
-	return AE_OK;
-}
-
-static int riscv_acpi_irq_get_dep(acpi_handle handle, unsigned int index, acpi_handle *gsi_handle)
-{
-	struct acpi_irq_dep_ctx ctx = {-EINVAL, index, NULL};
-
-	if (!gsi_handle)
-		return 0;
-
-	acpi_walk_resources(handle, METHOD_NAME__CRS, riscv_acpi_irq_get_parent, &ctx);
-	*gsi_handle = ctx.handle;
-	if (*gsi_handle)
-		return 1;
-
-	return 0;
-}
-
-static u32 riscv_acpi_add_prt_dep(acpi_handle handle)
-{
-	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
-	struct acpi_pci_routing_table *entry;
-	struct acpi_handle_list dep_devices;
-	acpi_handle gsi_handle;
-	acpi_handle link_handle;
-	acpi_status status;
-	u32 count = 0;
-
-	status = acpi_get_irq_routing_table(handle, &buffer);
-	if (ACPI_FAILURE(status)) {
-		acpi_handle_err(handle, "failed to get IRQ routing table\n");
-		kfree(buffer.pointer);
-		return 0;
-	}
-
-	entry = buffer.pointer;
-	while (entry && (entry->length > 0)) {
-		if (entry->source[0]) {
-			acpi_get_handle(handle, entry->source, &link_handle);
-			dep_devices.count = 1;
-			dep_devices.handles = kzalloc_objs(*dep_devices.handles,
-							   1);
-			if (!dep_devices.handles) {
-				acpi_handle_err(handle, "failed to allocate memory\n");
-				continue;
-			}
-
-			dep_devices.handles[0] = link_handle;
-			count += acpi_scan_add_dep(handle, &dep_devices);
-		} else {
-			gsi_handle = riscv_acpi_get_gsi_handle(entry->source_index);
-			dep_devices.count = 1;
-			dep_devices.handles = kzalloc_objs(*dep_devices.handles,
-							   1);
-			if (!dep_devices.handles) {
-				acpi_handle_err(handle, "failed to allocate memory\n");
-				continue;
-			}
-
-			dep_devices.handles[0] = gsi_handle;
-			count += acpi_scan_add_dep(handle, &dep_devices);
-		}
-
-		entry = (struct acpi_pci_routing_table *)
-			((unsigned long)entry + entry->length);
-	}
-
-	kfree(buffer.pointer);
-	return count;
-}
-
-static u32 riscv_acpi_add_irq_dep(acpi_handle handle)
-{
-	struct acpi_handle_list dep_devices;
-	acpi_handle gsi_handle;
-	u32 count = 0;
-	int i;
-
-	for (i = 0;
-	     riscv_acpi_irq_get_dep(handle, i, &gsi_handle);
-	     i++) {
-		dep_devices.count = 1;
-		dep_devices.handles = kzalloc_objs(*dep_devices.handles, 1);
-		if (!dep_devices.handles) {
-			acpi_handle_err(handle, "failed to allocate memory\n");
-			continue;
-		}
-
-		dep_devices.handles[0] = gsi_handle;
-		count += acpi_scan_add_dep(handle, &dep_devices);
-	}
-
-	return count;
-}
-
 u32 arch_acpi_add_auto_dep(acpi_handle handle)
 {
-	if (acpi_has_method(handle, "_PRT"))
-		return riscv_acpi_add_prt_dep(handle);
-
-	return riscv_acpi_add_irq_dep(handle);
+	return acpi_irq_add_auto_dep(handle);
 }
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 21937912a1a5..f4cc1da48224 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -273,13 +273,9 @@ static int acpi_scan_check_and_detach(struct acpi_device *adev, void *p)
 		}
 	}
 
-	adev->flags.match_driver = false;
-	if (handler) {
-		if (handler->detach)
-			handler->detach(adev);
-	} else {
-		device_release_driver(&adev->dev);
-	}
+	if (handler && handler->detach)
+		handler->detach(adev);
+
 	/*
 	 * Most likely, the device is going away, so put it into D3cold before
 	 * that.
@@ -854,6 +850,7 @@ static const char * const acpi_ignore_dep_ids[] = {
 
 /* List of HIDs for which we honor deps of matching ACPI devs, when checking _DEP lists. */
 static const char * const acpi_honor_dep_ids[] = {
+	"ARMH0003", /* ARM GICv5 IWB */
 	"INT3472", /* Camera sensor PMIC / clk and regulator info */
 	"INTC1059", /* IVSC (TGL) driver must be loaded to allow i2c access to camera sensors */
 	"INTC1095", /* IVSC (ADL) driver must be loaded to allow i2c access to camera sensors */
@@ -1769,7 +1766,6 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
 	 * Some ACPI devs contain SerialBus resources even though they are not
 	 * attached to a serial bus at all.
 	 */
-		{ACPI_VIDEO_HID, },
 		{"MSHW0028", },
 	/*
 	 * HIDs of device with an UartSerialBusV2 resource for which userspace
@@ -1792,6 +1788,9 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
 	     fwnode_property_present(&device->fwnode, "baud")))
 		return true;
 
+	if (acpi_dev_is_video_device(device))
+		return false;
+
 	if (!acpi_match_device_ids(device, ignore_serial_bus_ids))
 		return false;
 
@@ -1816,13 +1815,13 @@ void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
 	device->dev.release = release;
 	device->dev.bus = &acpi_bus_type;
 	device->dev.groups = acpi_groups;
+	device_set_pm_not_required(&device->dev);
 	fwnode_init(&device->fwnode, &acpi_device_fwnode_ops);
 	acpi_set_device_status(device, ACPI_STA_DEFAULT);
 	acpi_device_get_busid(device);
 	acpi_set_pnp_ids(handle, &device->pnp, type);
 	acpi_init_properties(device);
 	acpi_bus_get_flags(device);
-	device->flags.match_driver = false;
 	device->flags.initialized = true;
 	device->flags.enumeration_by_parent =
 		acpi_device_enumeration_by_parent(device);
@@ -2376,16 +2375,11 @@ static int acpi_bus_attach(struct acpi_device *device, void *first_pass)
 	if (ret < 0)
 		return 0;
 
-	device->flags.match_driver = true;
 	if (ret > 0 && !device->flags.enumeration_by_parent) {
 		acpi_device_set_enumerated(device);
 		goto ok;
 	}
 
-	ret = device_attach(&device->dev);
-	if (ret < 0)
-		return 0;
-
 	if (device->pnp.type.platform_id || device->pnp.type.backlight ||
 	    device->flags.enumeration_by_parent)
 		acpi_default_enumeration(device);
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 908cc5c7e643..dd4a99f09efe 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -316,6 +316,7 @@ struct acpi_table_attr {
 struct acpi_data_attr {
 	struct bin_attribute attr;
 	u64	addr;
+	char filename[ACPI_NAMESEG_SIZE+ACPI_INST_SIZE];
 };
 
 static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
@@ -447,13 +448,12 @@ static int acpi_bert_data_init(void *th, struct acpi_data_attr *data_attr)
 	struct acpi_table_bert *bert = th;
 
 	if (bert->header.length < sizeof(struct acpi_table_bert) ||
-	    bert->region_length < sizeof(struct acpi_hest_generic_status)) {
+	    bert->region_length < sizeof(struct acpi_bert_region)) {
 		kfree(data_attr);
 		return -EINVAL;
 	}
 	data_attr->addr = bert->address;
 	data_attr->attr.size = bert->region_length;
-	data_attr->attr.attr.name = "BERT";
 
 	return sysfs_create_bin_file(tables_data_kobj, &data_attr->attr);
 }
@@ -469,7 +469,6 @@ static int acpi_ccel_data_init(void *th, struct acpi_data_attr *data_attr)
 	}
 	data_attr->addr = ccel->log_area_start_address;
 	data_attr->attr.size = ccel->log_area_minimum_length;
-	data_attr->attr.attr.name = "CCEL";
 
 	return sysfs_create_bin_file(tables_data_kobj, &data_attr->attr);
 }
@@ -484,7 +483,7 @@ static struct acpi_data_obj {
 
 #define NUM_ACPI_DATA_OBJS ARRAY_SIZE(acpi_data_objs)
 
-static int acpi_table_data_init(struct acpi_table_header *th)
+static int acpi_table_data_init(struct acpi_table_header *th, struct acpi_table_attr *table_attr)
 {
 	struct acpi_data_attr *data_attr;
 	int i;
@@ -497,6 +496,8 @@ static int acpi_table_data_init(struct acpi_table_header *th)
 			sysfs_attr_init(&data_attr->attr.attr);
 			data_attr->attr.read = acpi_data_show;
 			data_attr->attr.attr.mode = 0400;
+			strscpy(data_attr->filename, table_attr->filename);
+			data_attr->attr.attr.name = data_attr->filename;
 			return acpi_data_objs[i].fn(th, data_attr);
 		}
 	}
@@ -543,7 +544,7 @@ static int acpi_tables_sysfs_init(void)
 			return ret;
 		}
 		list_add_tail(&table_attr->node, &acpi_table_attr_list);
-		acpi_table_data_init(table_header);
+		acpi_table_data_init(table_header, table_attr);
 	}
 
 	kobject_uevent(tables_kobj, KOBJ_ADD);
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index 6ab27e4826d1..d499b72574ab 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -1048,6 +1048,23 @@ static int __init acpi_backlight(char *str)
 __setup("acpi_backlight=", acpi_backlight);
 
 /**
+ * acpi_dev_is_video_device - test if device matches against ACPI video device IDs
+ * @adev: ACPI device to test
+ *
+ * Return: true when matches, otherwise false.
+ */
+bool acpi_dev_is_video_device(struct acpi_device *adev)
+{
+	static const struct acpi_device_id video_device_ids[] = {
+		{ .id = ACPI_VIDEO_HID },
+		{ }
+	};
+
+	return adev && !acpi_match_device_ids(adev, video_device_ids);
+}
+EXPORT_SYMBOL(acpi_dev_is_video_device);
+
+/**
  * acpi_match_platform_list - Check if the system matches with a given list
  * @plat: pointer to acpi_platform_list table terminated by a NULL entry
  *
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 458efa4fe9d4..5b0dc679e322 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -67,13 +67,8 @@ find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
 	long *cap = context;
 	struct pci_dev *dev;
 
-	static const struct acpi_device_id video_ids[] = {
-		{ACPI_VIDEO_HID, 0},
-		{"", 0},
-	};
-
-	if (acpi_dev && !acpi_match_device_ids(acpi_dev, video_ids)) {
-		dev = acpi_get_pci_dev(handle);
+	if (acpi_dev_is_video_device(acpi_dev)) {
+		dev = acpi_dev_get_pci_dev(acpi_dev);
 		if (!dev)
 			return AE_OK;
 		pci_dev_put(dev);
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 335288e8b5b3..fab38bc98113 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -469,9 +469,6 @@ static int rpm_callback(int (*cb)(struct device *), struct device *dev)
 	if (retval == -EACCES)
 		retval = -EAGAIN;
 
-	if (retval != -EAGAIN && retval != -EBUSY)
-		dev->power.runtime_error = retval;
-
 	return retval;
 }
 
@@ -751,6 +748,9 @@ static int rpm_suspend(struct device *dev, int rpmflags)
 	dev->power.deferred_resume = false;
 	wake_up_all(&dev->power.wait_queue);
 
+	if (retval != -EAGAIN && retval != -EBUSY)
+		dev->power.runtime_error = retval;
+
 	/*
 	 * On transient errors, if the callback routine failed an autosuspend,
 	 * and if the last_busy time has been updated so that there is a new
diff --git a/drivers/cpufreq/amd-pstate-ut.c b/drivers/cpufreq/amd-pstate-ut.c
index 735b29f76438..2142838ad6cc 100644
--- a/drivers/cpufreq/amd-pstate-ut.c
+++ b/drivers/cpufreq/amd-pstate-ut.c
@@ -560,6 +560,11 @@ out:
 static int __init amd_pstate_ut_init(void)
 {
 	u32 i = 0, arr_size = ARRAY_SIZE(amd_pstate_ut_cases);
+	enum amd_pstate_mode mode = amd_pstate_get_status();
+
+	/* don't test if no running amd-pstate driver */
+	if (mode == AMD_PSTATE_UNDEFINED || mode == AMD_PSTATE_DISABLE)
+		return -EOPNOTSUPP;
 
 	for (i = 0; i < arr_size; i++) {
 		int ret;
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index a74a4cf99d22..6e255a22a0b8 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -199,7 +199,7 @@ static inline int get_mode_idx_from_str(const char *str, size_t size)
 
 static DEFINE_MUTEX(amd_pstate_driver_lock);
 
-static u8 msr_get_epp(struct amd_cpudata *cpudata)
+static int msr_get_epp(struct amd_cpudata *cpudata)
 {
 	u64 value;
 	int ret;
@@ -215,12 +215,12 @@ static u8 msr_get_epp(struct amd_cpudata *cpudata)
 
 DEFINE_STATIC_CALL(amd_pstate_get_epp, msr_get_epp);
 
-static inline s16 amd_pstate_get_epp(struct amd_cpudata *cpudata)
+static inline int amd_pstate_get_epp(struct amd_cpudata *cpudata)
 {
 	return static_call(amd_pstate_get_epp)(cpudata);
 }
 
-static u8 shmem_get_epp(struct amd_cpudata *cpudata)
+static int shmem_get_epp(struct amd_cpudata *cpudata)
 {
 	u64 epp;
 	int ret;
@@ -526,9 +526,6 @@ static int shmem_init_perf(struct amd_cpudata *cpudata)
 	WRITE_ONCE(cpudata->perf, perf);
 	WRITE_ONCE(cpudata->prefcore_ranking, cppc_perf.highest_perf);
 
-	if (cppc_state == AMD_PSTATE_ACTIVE)
-		return 0;
-
 	ret = cppc_get_auto_sel(cpudata->cpu, &auto_sel);
 	if (ret) {
 		pr_warn("failed to get auto_sel, ret: %d\n", ret);
@@ -782,6 +779,7 @@ static unsigned int amd_pstate_fast_switch(struct cpufreq_policy *policy,
 static void amd_pstate_adjust_perf(struct cpufreq_policy *policy,
 				   unsigned long _min_perf,
 				   unsigned long target_perf,
+				   unsigned long _max_perf,
 				   unsigned long capacity)
 {
 	u8 max_perf, min_perf, des_perf, cap_perf;
@@ -1031,7 +1029,7 @@ static int amd_pstate_init_freq(struct amd_cpudata *cpudata)
 		return -EINVAL;
 	}
 
-	if (lowest_nonlinear_freq <= min_freq || lowest_nonlinear_freq > nominal_freq) {
+	if (lowest_nonlinear_freq < min_freq || lowest_nonlinear_freq > nominal_freq) {
 		pr_err("lowest_nonlinear_freq(%d) value is out of range [min_freq(%d), nominal_freq(%d)]\n",
 			lowest_nonlinear_freq, min_freq, nominal_freq);
 		return -EINVAL;
@@ -1173,6 +1171,9 @@ static int amd_pstate_power_supply_notifier(struct notifier_block *nb,
 	if (cpudata->current_profile != PLATFORM_PROFILE_BALANCED)
 		return 0;
 
+	if (!policy)
+		return NOTIFY_OK;
+
 	epp = amd_pstate_get_balanced_epp(policy);
 
 	ret = amd_pstate_set_epp(policy, epp);
@@ -1208,6 +1209,9 @@ static int amd_pstate_profile_set(struct device *dev,
 	struct cpufreq_policy *policy __free(put_cpufreq_policy) = cpufreq_cpu_get(cpudata->cpu);
 	int ret;
 
+	if (!policy)
+		return -ENODEV;
+
 	switch (profile) {
 	case PLATFORM_PROFILE_LOW_POWER:
 		ret = amd_pstate_set_epp(policy, AMD_CPPC_EPP_POWERSAVE);
@@ -1876,6 +1880,7 @@ static int amd_pstate_epp_cpu_init(struct cpufreq_policy *policy)
 	struct amd_cpudata *cpudata;
 	union perf_cached perf;
 	struct device *dev;
+	int default_epp;
 	int ret;
 
 	/*
@@ -1924,6 +1929,14 @@ static int amd_pstate_epp_cpu_init(struct cpufreq_policy *policy)
 
 	policy->boost_supported = READ_ONCE(cpudata->boost_supported);
 
+	/* Cache the firmware programmed EPP */
+	default_epp = amd_pstate_get_epp(cpudata);
+	if (default_epp < 0) {
+		ret = default_epp;
+		goto free_cpudata1;
+	}
+	FIELD_MODIFY(AMD_CPPC_EPP_PERF_MASK, &cpudata->cppc_req_cached, default_epp);
+
 	/*
 	 * Set the policy to provide a valid fallback value in case
 	 * the default cpufreq governor is neither powersave nor performance.
@@ -1931,7 +1944,7 @@ static int amd_pstate_epp_cpu_init(struct cpufreq_policy *policy)
 	if (amd_pstate_acpi_pm_profile_server() ||
 	    amd_pstate_acpi_pm_profile_undefined()) {
 		policy->policy = CPUFREQ_POLICY_PERFORMANCE;
-		cpudata->epp_default_ac = cpudata->epp_default_dc = amd_pstate_get_epp(cpudata);
+		cpudata->epp_default_ac = cpudata->epp_default_dc = default_epp;
 		cpudata->current_profile = PLATFORM_PROFILE_PERFORMANCE;
 	} else {
 		policy->policy = CPUFREQ_POLICY_POWERSAVE;
@@ -2167,6 +2180,7 @@ static struct cpufreq_driver amd_pstate_epp_driver = {
 };
 
 /*
+ * Processors without frequency scaling support can't do CPPC.
  * CPPC function is not supported for family ID 17H with model_ID ranging from 0x10 to 0x2F.
  * show the debug message that helps to check if the CPU has CPPC support for loading issue.
  */
@@ -2175,6 +2189,11 @@ static bool amd_cppc_supported(void)
 	struct cpuinfo_x86 *c = &cpu_data(0);
 	bool warn = false;
 
+	if (!cpu_feature_enabled(X86_FEATURE_HW_PSTATE)) {
+		pr_debug_once("frequency scaling is not supported by the processor\n");
+		return false;
+	}
+
 	if ((boot_cpu_data.x86 == 0x17) && (boot_cpu_data.x86_model < 0x30)) {
 		pr_debug_once("CPPC feature is not supported by the processor\n");
 		return false;
diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
index f6cea0c54dd9..6fe0e972952a 100644
--- a/drivers/cpufreq/cppc_cpufreq.c
+++ b/drivers/cpufreq/cppc_cpufreq.c
@@ -290,19 +290,32 @@ static inline void cppc_freq_invariance_exit(void)
 }
 #endif /* CONFIG_ACPI_CPPC_CPUFREQ_FIE */
 
-static void cppc_cpufreq_update_perf_limits(struct cppc_cpudata *cpu_data,
-					    struct cpufreq_policy *policy)
+static void cppc_cpufreq_get_perf_limits(struct cppc_cpudata *cpu_data,
+					 struct cpufreq_policy *policy,
+					 u32 *min_perf, u32 *max_perf)
 {
 	struct cppc_perf_caps *caps = &cpu_data->perf_caps;
-	u32 min_perf, max_perf;
+	unsigned int min_freq, max_freq;
+	u32 min, max;
+
+	min_freq = READ_ONCE(policy->min);
+	max_freq = READ_ONCE(policy->max);
+	if (unlikely(min_freq > max_freq))
+		min_freq = max_freq;
+
+	min = cppc_khz_to_perf(caps, min_freq);
+	max = cppc_khz_to_perf(caps, max_freq);
 
-	min_perf = cppc_khz_to_perf(caps, policy->min);
-	max_perf = cppc_khz_to_perf(caps, policy->max);
+	*min_perf = clamp_t(u32, min, caps->lowest_perf, caps->highest_perf);
+	*max_perf = clamp_t(u32, max, caps->lowest_perf, caps->highest_perf);
+}
 
-	cpu_data->perf_ctrls.min_perf =
-		clamp_t(u32, min_perf, caps->lowest_perf, caps->highest_perf);
-	cpu_data->perf_ctrls.max_perf =
-		clamp_t(u32, max_perf, caps->lowest_perf, caps->highest_perf);
+static void cppc_cpufreq_update_perf_limits(struct cppc_cpudata *cpu_data,
+					    struct cpufreq_policy *policy)
+{
+	cppc_cpufreq_get_perf_limits(cpu_data, policy,
+				     &cpu_data->perf_ctrls.min_perf,
+				     &cpu_data->perf_ctrls.max_perf);
 }
 
 static int cppc_cpufreq_set_target(struct cpufreq_policy *policy,
@@ -693,7 +706,7 @@ static int cppc_cpufreq_cpu_init(struct cpufreq_policy *policy)
 		goto out;
 	}
 
-	policy->fast_switch_possible = cppc_allow_fast_switch();
+	policy->fast_switch_possible = cppc_allow_fast_switch(policy->cpus);
 	policy->dvfs_possible_from_any_cpu = true;
 
 	/*
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index b898b6544069..0d0df986fa3d 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -2225,14 +2225,17 @@ EXPORT_SYMBOL_GPL(cpufreq_driver_fast_switch);
  * @policy: cpufreq policy object of the target CPU.
  * @min_perf: Minimum (required) performance level (units of @capacity).
  * @target_perf: Target (desired) performance level (units of @capacity).
+ * @max_perf: Maximum (allowed) performance level (units of @capacity).
  * @capacity: Capacity of the target CPU.
  *
- * Carry out a fast performance level switch of @cpu without sleeping.
+ * Carry out a fast performance level adjustment for the CPU represented by
+ * @policy without sleeping.
  *
  * The driver's ->adjust_perf() callback invoked by this function must be
- * suitable for being called from within RCU-sched read-side critical sections
- * and it is expected to select a suitable performance level equal to or above
- * @min_perf and preferably equal to or below @target_perf.
+ * suitable for calling from within RCU-sched read-side critical sections and
+ * it is expected to program the processor to select suitable performance
+ * levels between @min_perf and @max_perf inclusive and preferably close to
+ * @target_perf going forward for the CPU represented by @policy.
  *
  * This function must not be called if policy->fast_switch_enabled is unset.
  *
@@ -2244,9 +2247,10 @@ EXPORT_SYMBOL_GPL(cpufreq_driver_fast_switch);
 void cpufreq_driver_adjust_perf(struct cpufreq_policy *policy,
 				 unsigned long min_perf,
 				 unsigned long target_perf,
+				 unsigned long max_perf,
 				 unsigned long capacity)
 {
-	cpufreq_driver->adjust_perf(policy, min_perf, target_perf, capacity);
+	cpufreq_driver->adjust_perf(policy, min_perf, target_perf, max_perf, capacity);
 }
 
 /**
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 6e984c114d96..2cbf810db66e 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -299,7 +299,6 @@ struct pstate_funcs {
 static struct pstate_funcs pstate_funcs __read_mostly;
 
 static bool hwp_active __ro_after_init;
-static int hwp_mode_bdw __ro_after_init;
 static bool per_cpu_limits __ro_after_init;
 static bool hwp_forced __ro_after_init;
 static bool hwp_boost __read_mostly;
@@ -587,21 +586,14 @@ static void intel_pstate_hybrid_hwp_adjust(struct cpudata *cpu)
 
 	hwp_is_hybrid = true;
 
-	cpu->pstate.turbo_freq = rounddown(cpu->pstate.turbo_pstate * scaling,
-					   perf_ctl_scaling);
-	cpu->pstate.max_freq = rounddown(cpu->pstate.max_pstate * scaling,
-					 perf_ctl_scaling);
-
 	freq = perf_ctl_max_phys * perf_ctl_scaling;
 	cpu->pstate.max_pstate_physical = intel_pstate_freq_to_hwp(cpu, freq);
 
-	freq = cpu->pstate.min_pstate * perf_ctl_scaling;
-	cpu->pstate.min_freq = freq;
 	/*
 	 * Cast the min P-state value retrieved via pstate_funcs.get_min() to
 	 * the effective range of HWP performance levels.
 	 */
-	cpu->pstate.min_pstate = intel_pstate_freq_to_hwp(cpu, freq);
+	cpu->pstate.min_pstate = intel_pstate_freq_to_hwp(cpu, cpu->pstate.min_freq);
 }
 
 static bool turbo_is_disabled(void)
@@ -979,12 +971,10 @@ static int hybrid_get_cost(struct device *dev, unsigned long freq,
 	 * capacity.  Similarly, P-cores start to be populated when E-cores are
 	 * utilized above 60% of the capacity.
 	 */
-	if (hybrid_get_cpu_type(dev->id) == INTEL_CPU_TYPE_ATOM) {
-		if (hybrid_has_l3(dev->id)) /* E-core */
-			*cost += 1;
-	} else { /* P-core */
+	if (hybrid_get_cpu_type(dev->id) == INTEL_CPU_TYPE_CORE) /* P-core */
 		*cost += 2;
-	}
+	else if (hybrid_has_l3(dev->id)) /* E-core */
+		*cost += 1;
 
 	return 0;
 }
@@ -1185,6 +1175,22 @@ static bool hybrid_clear_max_perf_cpu(void)
 	return ret;
 }
 
+static void intel_pstate_update_freq_limits(struct cpudata *cpu)
+{
+	int scaling = cpu->pstate.scaling;
+	unsigned int turbo_freq = cpu->pstate.turbo_pstate * scaling;
+	unsigned int max_freq = cpu->pstate.max_pstate * scaling;
+	int perf_ctl_scaling = cpu->pstate.perf_ctl_scaling;
+
+	if (scaling != perf_ctl_scaling) {
+		turbo_freq = rounddown(turbo_freq, perf_ctl_scaling);
+		max_freq = rounddown(max_freq, perf_ctl_scaling);
+	}
+
+	cpu->pstate.turbo_freq = turbo_freq;
+	cpu->pstate.max_freq = max_freq;
+}
+
 static void __intel_pstate_get_hwp_cap(struct cpudata *cpu)
 {
 	u64 cap;
@@ -1197,20 +1203,8 @@ static void __intel_pstate_get_hwp_cap(struct cpudata *cpu)
 
 static void intel_pstate_get_hwp_cap(struct cpudata *cpu)
 {
-	int scaling = cpu->pstate.scaling;
-
 	__intel_pstate_get_hwp_cap(cpu);
-
-	cpu->pstate.max_freq = cpu->pstate.max_pstate * scaling;
-	cpu->pstate.turbo_freq = cpu->pstate.turbo_pstate * scaling;
-	if (scaling != cpu->pstate.perf_ctl_scaling) {
-		int perf_ctl_scaling = cpu->pstate.perf_ctl_scaling;
-
-		cpu->pstate.max_freq = rounddown(cpu->pstate.max_freq,
-						 perf_ctl_scaling);
-		cpu->pstate.turbo_freq = rounddown(cpu->pstate.turbo_freq,
-						   perf_ctl_scaling);
-	}
+	intel_pstate_update_freq_limits(cpu);
 }
 
 static void hybrid_update_capacity(struct cpudata *cpu)
@@ -2299,33 +2293,16 @@ static int hwp_get_cpu_scaling(int cpu)
 	return intel_pstate_cppc_get_scaling(cpu);
 }
 
-static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate)
-{
-	trace_cpu_frequency(pstate * cpu->pstate.scaling, cpu->cpu);
-	cpu->pstate.current_pstate = pstate;
-	/*
-	 * Generally, there is no guarantee that this code will always run on
-	 * the CPU being updated, so force the register update to run on the
-	 * right CPU.
-	 */
-	wrmsrq_on_cpu(cpu->cpu, MSR_IA32_PERF_CTL,
-		      pstate_funcs.get_val(cpu, pstate));
-}
-
-static void intel_pstate_set_min_pstate(struct cpudata *cpu)
-{
-	intel_pstate_set_pstate(cpu, cpu->pstate.min_pstate);
-}
-
 static void intel_pstate_get_cpu_pstates(struct cpudata *cpu)
 {
 	int perf_ctl_scaling = pstate_funcs.get_scaling();
 
 	cpu->pstate.max_pstate_physical = pstate_funcs.get_max_physical(cpu->cpu);
 	cpu->pstate.min_pstate = pstate_funcs.get_min(cpu->cpu);
+	cpu->pstate.min_freq = cpu->pstate.min_pstate * perf_ctl_scaling;
 	cpu->pstate.perf_ctl_scaling = perf_ctl_scaling;
 
-	if (hwp_active && !hwp_mode_bdw) {
+	if (hwp_active) {
 		__intel_pstate_get_hwp_cap(cpu);
 
 		if (pstate_funcs.get_cpu_scaling) {
@@ -2345,19 +2322,13 @@ static void intel_pstate_get_cpu_pstates(struct cpudata *cpu)
 		cpu->pstate.turbo_pstate = pstate_funcs.get_turbo(cpu->cpu);
 	}
 
-	if (cpu->pstate.scaling == perf_ctl_scaling) {
-		cpu->pstate.min_freq = cpu->pstate.min_pstate * perf_ctl_scaling;
-		cpu->pstate.max_freq = cpu->pstate.max_pstate * perf_ctl_scaling;
-		cpu->pstate.turbo_freq = cpu->pstate.turbo_pstate * perf_ctl_scaling;
-	}
+	intel_pstate_update_freq_limits(cpu);
 
 	if (pstate_funcs.get_aperf_mperf_shift)
 		cpu->aperf_mperf_shift = pstate_funcs.get_aperf_mperf_shift();
 
 	if (pstate_funcs.get_vid)
 		pstate_funcs.get_vid(cpu);
-
-	intel_pstate_set_min_pstate(cpu);
 }
 
 /*
@@ -2884,6 +2855,19 @@ static void intel_pstate_update_perf_limits(struct cpudata *cpu,
 		 cpu->min_perf_ratio);
 }
 
+static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate)
+{
+	trace_cpu_frequency(pstate * cpu->pstate.scaling, cpu->cpu);
+	cpu->pstate.current_pstate = pstate;
+	/*
+	 * Generally, there is no guarantee that this code will always run on
+	 * the CPU being updated, so force the register update to run on the
+	 * right CPU.
+	 */
+	wrmsrq_on_cpu(cpu->cpu, MSR_IA32_PERF_CTL,
+		      pstate_funcs.get_val(cpu, pstate));
+}
+
 static int intel_pstate_set_policy(struct cpufreq_policy *policy)
 {
 	struct cpudata *cpu;
@@ -2971,6 +2955,11 @@ static int intel_pstate_verify_policy(struct cpufreq_policy_data *policy)
 	return 0;
 }
 
+static void intel_pstate_set_min_pstate(struct cpudata *cpu)
+{
+	intel_pstate_set_pstate(cpu, cpu->pstate.min_pstate);
+}
+
 static int intel_cpufreq_cpu_offline(struct cpufreq_policy *policy)
 {
 	struct cpudata *cpu = all_cpu_data[policy->cpu];
@@ -3063,6 +3052,7 @@ static int __intel_pstate_cpu_init(struct cpufreq_policy *policy)
 static int intel_pstate_cpu_init(struct cpufreq_policy *policy)
 {
 	int ret = __intel_pstate_cpu_init(policy);
+	struct cpudata *cpu;
 
 	if (ret)
 		return ret;
@@ -3073,11 +3063,11 @@ static int intel_pstate_cpu_init(struct cpufreq_policy *policy)
 	 */
 	policy->policy = CPUFREQ_POLICY_POWERSAVE;
 
-	if (hwp_active) {
-		struct cpudata *cpu = all_cpu_data[policy->cpu];
-
+	cpu = all_cpu_data[policy->cpu];
+	if (hwp_active)
 		cpu->epp_cached = intel_pstate_get_epp(cpu, 0);
-	}
+	else
+		intel_pstate_set_min_pstate(cpu);
 
 	return 0;
 }
@@ -3243,6 +3233,7 @@ static unsigned int intel_cpufreq_fast_switch(struct cpufreq_policy *policy,
 static void intel_cpufreq_adjust_perf(struct cpufreq_policy *policy,
 				      unsigned long min_perf,
 				      unsigned long target_perf,
+				      unsigned long max_perf,
 				      unsigned long capacity)
 {
 	struct cpudata *cpu = all_cpu_data[policy->cpu];
@@ -3273,7 +3264,13 @@ static void intel_cpufreq_adjust_perf(struct cpufreq_policy *policy,
 	if (min_pstate > cpu->max_perf_ratio)
 		min_pstate = cpu->max_perf_ratio;
 
-	max_pstate = min(cap_pstate, cpu->max_perf_ratio);
+	max_pstate = cap_pstate;
+	if (max_perf < capacity)
+		max_pstate = DIV_ROUND_UP(cap_pstate * max_perf, capacity);
+
+	if (max_pstate > cpu->max_perf_ratio)
+		max_pstate = cpu->max_perf_ratio;
+
 	if (max_pstate < min_pstate)
 		max_pstate = min_pstate;
 
@@ -3301,8 +3298,6 @@ static int intel_cpufreq_cpu_init(struct cpufreq_policy *policy)
 		return ret;
 
 	policy->cpuinfo.transition_latency = INTEL_CPUFREQ_TRANSITION_LATENCY;
-	/* This reflects the intel_pstate_get_cpu_pstates() setting. */
-	policy->cur = policy->cpuinfo.min_freq;
 
 	req = kzalloc_objs(*req, 2);
 	if (!req) {
@@ -3323,9 +3318,15 @@ static int intel_cpufreq_cpu_init(struct cpufreq_policy *policy)
 		WRITE_ONCE(cpu->hwp_req_cached, value);
 
 		cpu->epp_cached = intel_pstate_get_epp(cpu, value);
+
+		intel_cpufreq_hwp_update(cpu, cpu->pstate.min_pstate,
+					 cpu->pstate.max_pstate,
+					 cpu->pstate.min_pstate, false);
 	} else {
 		policy->transition_delay_us = INTEL_CPUFREQ_TRANSITION_DELAY;
+		intel_pstate_set_min_pstate(cpu);
 	}
+	policy->cur = policy->cpuinfo.min_freq;
 
 	freq = DIV_ROUND_UP(cpu->pstate.turbo_freq * global.min_perf_pct, 100);
 
@@ -3676,14 +3677,14 @@ static inline bool intel_pstate_has_acpi_ppc(void) { return false; }
 static inline void intel_pstate_request_control_from_smm(void) {}
 #endif /* CONFIG_ACPI */
 
-#define INTEL_PSTATE_HWP_BROADWELL	0x01
+#define INTEL_PSTATE_HWP_NOT_HYBRID	0x01
 
 #define X86_MATCH_HWP(vfm, hwp_mode)				\
 	X86_MATCH_VFM_FEATURE(vfm, X86_FEATURE_HWP, hwp_mode)
 
 static const struct x86_cpu_id hwp_support_ids[] __initconst = {
-	X86_MATCH_HWP(INTEL_BROADWELL_X,	INTEL_PSTATE_HWP_BROADWELL),
-	X86_MATCH_HWP(INTEL_BROADWELL_D,	INTEL_PSTATE_HWP_BROADWELL),
+	X86_MATCH_HWP(INTEL_BROADWELL_X,	INTEL_PSTATE_HWP_NOT_HYBRID),
+	X86_MATCH_HWP(INTEL_BROADWELL_D,	INTEL_PSTATE_HWP_NOT_HYBRID),
 	X86_MATCH_HWP(INTEL_ANY,		0),
 	{}
 };
@@ -3808,7 +3809,6 @@ static int __init intel_pstate_init(void)
 
 		if (!no_hwp) {
 			hwp_active = true;
-			hwp_mode_bdw = id->driver_data;
 			intel_pstate.attr = hwp_cpufreq_attrs;
 			intel_cpufreq.attr = hwp_cpufreq_attrs;
 			intel_cpufreq.flags |= CPUFREQ_NEED_UPDATE_LIMITS;
@@ -3816,7 +3816,8 @@ static int __init intel_pstate_init(void)
 			if (!default_driver)
 				default_driver = &intel_pstate;
 
-			pstate_funcs.get_cpu_scaling = hwp_get_cpu_scaling;
+			if (!id->driver_data)
+				pstate_funcs.get_cpu_scaling = hwp_get_cpu_scaling;
 
 			goto hwp_cpu_matched;
 		}
diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index 10cdceaba475..8f3bdd50186e 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -131,15 +131,6 @@ static int i2c_acpi_fill_info(struct acpi_resource *ares, void *data)
 	return 1;
 }
 
-static const struct acpi_device_id i2c_acpi_ignored_device_ids[] = {
-	/*
-	 * ACPI video acpi_devices, which are handled by the acpi-video driver
-	 * sometimes contain a SERIAL_TYPE_I2C ACPI resource, ignore these.
-	 */
-	{ ACPI_VIDEO_HID, 0 },
-	{}
-};
-
 struct i2c_acpi_irq_context {
 	int irq;
 	bool wake_capable;
@@ -158,7 +149,11 @@ static int i2c_acpi_do_lookup(struct acpi_device *adev,
 	if (!acpi_dev_ready_for_enumeration(adev))
 		return -ENODEV;
 
-	if (acpi_match_device_ids(adev, i2c_acpi_ignored_device_ids) == 0)
+	/*
+	 * ACPI video devices, which are handled by the acpi-video driver,
+	 * sometimes contain a SERIAL_TYPE_I2C ACPI resource, ignore these.
+	 */
+	if (acpi_dev_is_video_device(adev))
 		return -ENODEV;
 
 	memset(info, 0, sizeof(*info));
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index d74b478db280..bcc2725769c5 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -1779,6 +1779,7 @@ module_param_named(no_native, no_native, bool, 0444);
 MODULE_PARM_DESC(no_native, "Ignore cpu specific (native) idle states in lieu of ACPI idle states");
 
 static struct acpi_processor_power acpi_state_table __initdata;
+static bool acpi_lpi_available __initdata;
 
 /**
  * intel_idle_cst_usable - Check if the _CST information can be used.
@@ -1803,18 +1804,37 @@ static bool __init intel_idle_cst_usable(void)
 	return true;
 }
 
-static bool __init intel_idle_acpi_cst_extract(void)
+static bool __init intel_idle_acpi_extract_lpi_cstates(void)
 {
 	unsigned int cpu;
 
-	if (no_acpi) {
-		pr_debug("Not allowed to use ACPI _CST\n");
-		return false;
+	for_each_possible_cpu(cpu) {
+		struct acpi_processor *pr;
+
+		pr = per_cpu(processors, cpu);
+		if (!pr)
+			continue;
+
+		if (acpi_processor_extract_lpi_info(pr->handle,
+						    &acpi_state_table, true))
+			continue;
+
+		acpi_lpi_available = true;
+		return true;
 	}
 
+	pr_debug("No ACPI _LPI idle states\n");
+	return false;
+}
+
+static bool __init intel_idle_acpi_extract_cst_cstates(void)
+{
+	unsigned int cpu;
+
 	for_each_possible_cpu(cpu) {
-		struct acpi_processor *pr = per_cpu(processors, cpu);
+		struct acpi_processor *pr;
 
+		pr = per_cpu(processors, cpu);
 		if (!pr)
 			continue;
 
@@ -1826,18 +1846,96 @@ static bool __init intel_idle_acpi_cst_extract(void)
 		if (!intel_idle_cst_usable())
 			continue;
 
-		if (!acpi_processor_claim_cst_control())
-			break;
+		return true;
+	}
+
+	pr_debug("ACPI _CST not found or not usable\n");
+	return false;
+}
+
+static bool __init intel_idle_acpi_extract_cstates(void)
+{
+	if (intel_idle_acpi_extract_lpi_cstates())
+		return true;
 
+	if (intel_idle_acpi_extract_cst_cstates())
 		return true;
+
+	return false;
+}
+
+static bool __init intel_idle_acpi_probe(void)
+{
+	if (no_acpi) {
+		pr_debug("Not allowed to use ACPI for C-states extraction\n");
+		return false;
 	}
 
+	if (intel_idle_acpi_extract_cstates() &&
+	    acpi_processor_claim_cst_control())
+		return true;
+
 	acpi_state_table.count = 0;
-	pr_debug("ACPI _CST not found or not usable\n");
 	return false;
 }
 
-static void __init intel_idle_init_cstates_acpi(struct cpuidle_driver *drv)
+static void __init intel_idle_complete_state_init(struct cpuidle_state *state)
+{
+	if (intel_idle_state_needs_timer_stop(state))
+		state->flags |= CPUIDLE_FLAG_TIMER_STOP;
+
+	state->enter = intel_idle;
+	state->enter_dead = intel_idle_enter_dead;
+	state->enter_s2idle = intel_idle_s2idle;
+}
+
+static void __init intel_idle_init_cstates_acpi_lpi(struct cpuidle_driver *drv)
+{
+	int index;
+
+	for (index = 0; index < acpi_state_table.count; index++) {
+		struct acpi_lpi_state *lpi_state;
+		struct cpuidle_state *state;
+
+		if (intel_idle_max_cstate_reached(index))
+			break;
+
+		lpi_state = &acpi_state_table.lpi_states[index];
+
+		state = &drv->states[drv->state_count++];
+
+		scnprintf(state->name, CPUIDLE_NAME_LEN, "C%d_LPI", index + 1);
+		strscpy(state->desc, lpi_state->desc, CPUIDLE_DESC_LEN);
+		state->exit_latency = lpi_state->wake_latency;
+		state->target_residency = lpi_state->min_residency;
+		state->flags = MWAIT2flg(lpi_state->address);
+		/*
+		 * Assume that entering any of the idle states extracted from
+		 * _LPI except for the first two will cause the TLB to be
+		 * flushed and let the core call leave_mm() for them upfront
+		 * to avoid unnecessary wakeups due to TLB shootdowns.
+		 */
+		if (index > 1)
+			state->flags |= CPUIDLE_FLAG_TLB_FLUSHED;
+
+		if (disabled_states_mask & BIT(index + 1))
+			state->flags |= CPUIDLE_FLAG_OFF;
+
+		intel_idle_complete_state_init(state);
+
+		pr_info("%s: MWAIT hint 0x%x\n", state->name, flg2MWAIT(state->flags));
+	}
+
+	/*
+	 * Assume the first idle state in the table to be C1 and if any deeper
+	 * idle states are exposed while X86_FEATURE_NONSTOP_TSC is unset, mark
+	 * the TSC as unstable.
+	 */
+	if (index > 1 && !boot_cpu_has(X86_FEATURE_NONSTOP_TSC))
+		mark_tsc_unstable("TSC halts in idle");
+}
+
+static void __init intel_idle_init_cstates_acpi_cst(struct cpuidle_driver *drv)
 {
 	int cstate, limit = min_t(int, CPUIDLE_STATE_MAX, acpi_state_table.count);
 
@@ -1879,49 +1977,76 @@ static void __init intel_idle_init_cstates_acpi(struct cpuidle_driver *drv)
 		if (disabled_states_mask & BIT(cstate))
 			state->flags |= CPUIDLE_FLAG_OFF;
 
-		if (intel_idle_state_needs_timer_stop(state))
-			state->flags |= CPUIDLE_FLAG_TIMER_STOP;
-
 		if (cx->type > ACPI_STATE_C1 && !boot_cpu_has(X86_FEATURE_NONSTOP_TSC))
 			mark_tsc_unstable("TSC halts in idle");
 
-		state->enter = intel_idle;
-		state->enter_dead = intel_idle_enter_dead;
-		state->enter_s2idle = intel_idle_s2idle;
+		intel_idle_complete_state_init(state);
 	}
 }
 
-static bool __init intel_idle_off_by_default(unsigned int flags, u32 mwait_hint)
+static void __init intel_idle_init_cstates_acpi(struct cpuidle_driver *drv)
 {
-	int cstate, limit;
+	if (acpi_lpi_available)
+		intel_idle_init_cstates_acpi_lpi(drv);
+	else
+		intel_idle_init_cstates_acpi_cst(drv);
+}
 
-	/*
-	 * If there are no _CST C-states, do not disable any C-states by
-	 * default.
-	 */
-	if (!acpi_state_table.count)
-		return false;
+static bool __init intel_idle_acpi_hint_match(unsigned int flags, u32 acpi_hint,
+					      u32 table_hint)
+{
+	if (flags & CPUIDLE_FLAG_PARTIAL_HINT_MATCH) {
+		acpi_hint &= ~MWAIT_SUBSTATE_MASK;
+		table_hint &= ~MWAIT_SUBSTATE_MASK;
+	}
+	return acpi_hint == table_hint;
+}
+
+static bool __init intel_idle_off_by_default_lpi(unsigned int flags, u32 mwait_hint)
+{
+	int index;
+
+	for (index = 0; index < acpi_state_table.count; index++) {
+		u32 acpi_hint = acpi_state_table.lpi_states[index].address;
+
+		if (intel_idle_acpi_hint_match(flags, acpi_hint, mwait_hint))
+			return false;
+	}
+	return true;
+}
+
+static bool __init intel_idle_off_by_default_cst(unsigned int flags, u32 mwait_hint)
+{
+	int cstate, limit = min_t(int, CPUIDLE_STATE_MAX, acpi_state_table.count);
 
-	limit = min_t(int, CPUIDLE_STATE_MAX, acpi_state_table.count);
 	/*
 	 * If limit > 0, intel_idle_cst_usable() has returned 'true', so all of
 	 * the interesting states are ACPI_CSTATE_FFH.
 	 */
 	for (cstate = 1; cstate < limit; cstate++) {
 		u32 acpi_hint = acpi_state_table.states[cstate].address;
-		u32 table_hint = mwait_hint;
 
-		if (flags & CPUIDLE_FLAG_PARTIAL_HINT_MATCH) {
-			acpi_hint &= ~MWAIT_SUBSTATE_MASK;
-			table_hint &= ~MWAIT_SUBSTATE_MASK;
-		}
-
-		if (acpi_hint == table_hint)
+		if (intel_idle_acpi_hint_match(flags, acpi_hint, mwait_hint))
 			return false;
 	}
 	return true;
 }
 
+static bool __init intel_idle_off_by_default(unsigned int flags, u32 mwait_hint)
+{
+	/*
+	 * If there is no C-states information in the ACPI tables, do not
+	 * disable any C-states by default.
+	 */
+	if (!acpi_state_table.count)
+		return false;
+
+	if (acpi_lpi_available)
+		return intel_idle_off_by_default_lpi(flags, mwait_hint);
+
+	return intel_idle_off_by_default_cst(flags, mwait_hint);
+}
+
 static inline bool ignore_native(void)
 {
 	return no_native && !no_acpi;
@@ -1929,7 +2054,7 @@ static inline bool ignore_native(void)
 #else /* !CONFIG_ACPI_PROCESSOR_CSTATE */
 #define force_use_acpi	(false)
 
-static inline bool intel_idle_acpi_cst_extract(void) { return false; }
+static inline bool intel_idle_acpi_probe(void) { return false; }
 static inline void intel_idle_init_cstates_acpi(struct cpuidle_driver *drv) { }
 static inline bool intel_idle_off_by_default(unsigned int flags, u32 mwait_hint)
 {
@@ -2741,7 +2866,7 @@ static int __init intel_idle_init(void)
 	if (icpu) {
 		if (icpu->state_table)
 			cpuidle_state_table = icpu->state_table;
-		else if (!intel_idle_acpi_cst_extract())
+		else if (!intel_idle_acpi_probe())
 			return -ENODEV;
 
 		auto_demotion_disable_flags = icpu->auto_demotion_disable_flags;
@@ -2750,8 +2875,8 @@ static int __init intel_idle_init(void)
 		if (icpu->c1_demotion_supported)
 			c1_demotion_supported = true;
 		if (icpu->use_acpi || force_use_acpi)
-			intel_idle_acpi_cst_extract();
-	} else if (!intel_idle_acpi_cst_extract()) {
+			intel_idle_acpi_probe();
+	} else if (!intel_idle_acpi_probe()) {
 		return -ENODEV;
 	}
 
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index 99444a1b2ffa..2673954d4577 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -2588,7 +2588,7 @@ gic_acpi_init(union acpi_subtable_headers *header, const unsigned long end)
 	if (err)
 		goto out_fwhandle_free;
 
-	acpi_set_irq_model(ACPI_IRQ_MODEL_GIC, gic_v3_get_gsi_domain_id);
+	acpi_set_irq_model(ACPI_IRQ_MODEL_GIC, gic_v3_get_gsi_domain_id, NULL);
 
 	if (static_branch_likely(&supports_deactivate_key))
 		gic_acpi_setup_kvm_info();
diff --git a/drivers/irqchip/irq-gic-v5-iwb.c b/drivers/irqchip/irq-gic-v5-iwb.c
index 9103feb70ce8..6b02b90d9cce 100644
--- a/drivers/irqchip/irq-gic-v5-iwb.c
+++ b/drivers/irqchip/irq-gic-v5-iwb.c
@@ -269,6 +269,8 @@ static int gicv5_iwb_device_probe(struct platform_device *pdev)
 	if (IS_ERR(iwb_node))
 		return PTR_ERR(iwb_node);
 
+	acpi_device_clear_deps(&pdev->dev);
+
 	return 0;
 }
 
diff --git a/drivers/irqchip/irq-gic-v5.c b/drivers/irqchip/irq-gic-v5.c
index e9d1795235a6..5dcf404ab4c8 100644
--- a/drivers/irqchip/irq-gic-v5.c
+++ b/drivers/irqchip/irq-gic-v5.c
@@ -1226,11 +1226,19 @@ static struct fwnode_handle *gsi_domain_handle;
 static struct fwnode_handle *gic_v5_get_gsi_domain_id(u32 gsi)
 {
 	if (FIELD_GET(GICV5_GSI_IC_TYPE, gsi) == GICV5_GSI_IWB_TYPE)
-		return iort_iwb_handle(FIELD_GET(GICV5_GSI_IWB_FRAME_ID, gsi));
+		return iort_iwb_handle_fwnode(FIELD_GET(GICV5_GSI_IWB_FRAME_ID, gsi));
 
 	return gsi_domain_handle;
 }
 
+static acpi_handle gic_v5_get_gsi_handle(u32 gsi)
+{
+	if (FIELD_GET(GICV5_GSI_IC_TYPE, gsi) == GICV5_GSI_IWB_TYPE)
+		return iort_iwb_handle(FIELD_GET(GICV5_GSI_IWB_FRAME_ID, gsi));
+
+	return NULL;
+}
+
 static int __init gic_acpi_init(union acpi_subtable_headers *header, const unsigned long end)
 {
 	struct acpi_madt_gicv5_irs *irs = (struct acpi_madt_gicv5_irs *)header;
@@ -1251,7 +1259,8 @@ static int __init gic_acpi_init(union acpi_subtable_headers *header, const unsig
 	if (ret)
 		goto out_irs;
 
-	acpi_set_irq_model(ACPI_IRQ_MODEL_GIC_V5, gic_v5_get_gsi_domain_id);
+	acpi_set_irq_model(ACPI_IRQ_MODEL_GIC_V5, gic_v5_get_gsi_domain_id,
+			   gic_v5_get_gsi_handle);
 
 	return 0;
 
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index ec70c84e9f91..f6bc29f515fb 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -1690,7 +1690,7 @@ static int __init gic_v2_acpi_init(union acpi_subtable_headers *header,
 		return ret;
 	}
 
-	acpi_set_irq_model(ACPI_IRQ_MODEL_GIC, gic_v2_get_gsi_domain_id);
+	acpi_set_irq_model(ACPI_IRQ_MODEL_GIC, gic_v2_get_gsi_domain_id, NULL);
 
 	if (IS_ENABLED(CONFIG_ARM_GIC_V2M))
 		gicv2m_init(NULL, gic_data[0].domain);
diff --git a/drivers/irqchip/irq-loongarch-cpu.c b/drivers/irqchip/irq-loongarch-cpu.c
index 950bc087e388..84ce24889488 100644
--- a/drivers/irqchip/irq-loongarch-cpu.c
+++ b/drivers/irqchip/irq-loongarch-cpu.c
@@ -168,7 +168,7 @@ static int __init cpuintc_acpi_init(union acpi_subtable_headers *header,
 		panic("Failed to add irqdomain for LoongArch CPU");
 
 	set_handle_irq(&handle_cpu_irq);
-	acpi_set_irq_model(ACPI_IRQ_MODEL_LPIC, lpic_get_gsi_domain_id);
+	acpi_set_irq_model(ACPI_IRQ_MODEL_LPIC, lpic_get_gsi_domain_id, NULL);
 	acpi_set_gsi_to_irq_fallback(lpic_gsi_to_irq);
 	ret = acpi_cascade_irqdomain_init();
 
diff --git a/drivers/irqchip/irq-riscv-intc.c b/drivers/irqchip/irq-riscv-intc.c
index 84418dbd5a27..0595144116e2 100644
--- a/drivers/irqchip/irq-riscv-intc.c
+++ b/drivers/irqchip/irq-riscv-intc.c
@@ -384,7 +384,8 @@ static int __init riscv_intc_acpi_init(union acpi_subtable_headers *header,
 	if (rc)
 		irq_domain_free_fwnode(fn);
 	else
-		acpi_set_irq_model(ACPI_IRQ_MODEL_RINTC, riscv_acpi_get_gsi_domain_id);
+		acpi_set_irq_model(ACPI_IRQ_MODEL_RINTC, riscv_acpi_get_gsi_domain_id,
+				   acpi_get_riscv_gsi_handle);
 
 	return rc;
 }
diff --git a/drivers/pci/vgaarb.c b/drivers/pci/vgaarb.c
index c360eee11dd9..3de05aee7859 100644
--- a/drivers/pci/vgaarb.c
+++ b/drivers/pci/vgaarb.c
@@ -575,9 +575,7 @@ static bool vga_is_firmware_default(struct pci_dev *pdev)
 static bool vga_arb_integrated_gpu(struct device *dev)
 {
 #if defined(CONFIG_ACPI)
-	struct acpi_device *adev = ACPI_COMPANION(dev);
-
-	return adev && !strcmp(acpi_device_hid(adev), ACPI_VIDEO_HID);
+	return acpi_dev_is_video_device(ACPI_COMPANION(dev));
 #else
 	return false;
 #endif
diff --git a/drivers/platform/x86/lenovo/thinkpad_acpi.c b/drivers/platform/x86/lenovo/thinkpad_acpi.c
index 445e1403308e..b528a1e67dd3 100644
--- a/drivers/platform/x86/lenovo/thinkpad_acpi.c
+++ b/drivers/platform/x86/lenovo/thinkpad_acpi.c
@@ -768,7 +768,7 @@ static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle,
 	if (!strcmp(context, "video")) {
 		struct acpi_device *dev = acpi_fetch_acpi_dev(handle);
 
-		if (!dev || strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev)))
+		if (!acpi_dev_is_video_device(dev))
 			return AE_OK;
 	}
 
diff --git a/drivers/pnp/card.c b/drivers/pnp/card.c
index 87f5af454751..df5e3d3cbf6c 100644
--- a/drivers/pnp/card.c
+++ b/drivers/pnp/card.c
@@ -254,9 +254,16 @@ int pnp_add_card(struct pnp_card *card)
 	/* we wait until now to add devices in order to ensure the drivers
 	 * will be able to use all of the related devices on the card
 	 * without waiting an unreasonable length of time */
-	list_for_each(pos, &card->devices) {
+	list_for_each_safe(pos, temp, &card->devices) {
 		struct pnp_dev *dev = card_to_pnp_dev(pos);
-		__pnp_add_device(dev);
+		error = __pnp_add_device(dev);
+		if (error) {
+			mutex_lock(&pnp_lock);
+			list_del(&dev->card_list);
+			dev->card = NULL;
+			mutex_unlock(&pnp_lock);
+			put_device(&dev->dev);
+		}
 	}
 
 	/* match with card drivers */
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index fbf03ff007eb..d8ec0ad2ab4e 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -248,10 +248,7 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
 	if (acpi_has_method(device->handle, "_DIS"))
 		dev->capabilities |= PNP_DISABLE;
 
-	if (strlen(acpi_device_name(device)))
-		strscpy(dev->name, acpi_device_name(device), sizeof(dev->name));
-	else
-		strscpy(dev->name, acpi_device_bid(device), sizeof(dev->name));
+	strscpy(dev->name, acpi_device_bid(device), sizeof(dev->name));
 
 	if (dev->active)
 		pnpacpi_parse_allocated_resource(dev);
diff --git a/drivers/pnp/system.c b/drivers/pnp/system.c
index 835113b2cb04..bd939b564379 100644
--- a/drivers/pnp/system.c
+++ b/drivers/pnp/system.c
@@ -17,10 +17,10 @@
 
 static const struct pnp_device_id pnp_dev_table[] = {
 	/* General ID for reserving resources */
-	{"PNP0c02", 0},
+	{ .id = "PNP0c02" },
 	/* memory controller */
-	{"PNP0c01", 0},
-	{"", 0}
+	{ .id = "PNP0c01" },
+	{ }
 };
 
 static void reserve_range(struct pnp_dev *dev, struct resource *r, int port)
diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
index d200734625ee..5d70301d4a3d 100644
--- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
+++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
@@ -356,8 +356,10 @@ static void cleanup_odvp(struct int3400_thermal_priv *priv)
 			kfree(priv->odvp_attrs[i].attr.attr.name);
 		}
 		kfree(priv->odvp_attrs);
+		priv->odvp_attrs = NULL;
 	}
 	kfree(priv->odvp);
+	priv->odvp = NULL;
 	priv->odvp_count = 0;
 }
 
@@ -635,7 +637,6 @@ free_notify:
 	acpi_remove_notify_handler(priv->adev->handle, ACPI_DEVICE_NOTIFY,
 				   int3400_notify);
 free_sysfs:
-	cleanup_odvp(priv);
 	if (!ZERO_OR_NULL_PTR(priv->data_vault)) {
 		device_remove_bin_file(&pdev->dev, &bin_attr_data_vault);
 		kfree(priv->data_vault);
@@ -649,6 +650,7 @@ free_rel_misc:
 		acpi_thermal_rel_misc_device_remove(priv->adev->handle);
 	thermal_zone_device_unregister(priv->thermal);
 free_art_trt:
+	cleanup_odvp(priv);
 	kfree(priv->trts);
 	kfree(priv->arts);
 free_priv:
diff --git a/drivers/thermal/intel/int340x_thermal/platform_temperature_control.c b/drivers/thermal/intel/int340x_thermal/platform_temperature_control.c
index d92a6f84a778..43cb809c5dcc 100644
--- a/drivers/thermal/intel/int340x_thermal/platform_temperature_control.c
+++ b/drivers/thermal/intel/int340x_thermal/platform_temperature_control.c
@@ -227,17 +227,12 @@ static ssize_t ptc_temperature_write(struct file *file, const char __user *data,
 {
 	struct ptc_data *ptc_instance = file->private_data;
 	struct pci_dev *pdev = ptc_instance->pdev;
-	char buf[32];
-	ssize_t len;
 	u32 value;
+	int ret;
 
-	len = min(count, sizeof(buf) - 1);
-	if (copy_from_user(buf, data, len))
-		return -EFAULT;
-
-	buf[len] = '\0';
-	if (kstrtouint(buf, 0, &value))
-		return -EINVAL;
+	ret = kstrtou32_from_user(data, count, 0, &value);
+	if (unlikely(ret))
+		return ret;
 
 	if (ptc_mmio_regs[PTC_TEMP_OVERRIDE_INDEX].units)
 		value /= ptc_mmio_regs[PTC_TEMP_OVERRIDE_INDEX].units;
diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c
index c693d934103a..c5131423ec9b 100644
--- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c
+++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c
@@ -308,10 +308,8 @@ static int proc_thermal_setup_msi(struct pci_dev *pdev, struct proc_thermal_pci
 		ret = devm_request_threaded_irq(&pdev->dev, irq, proc_thermal_irq_handler,
 						proc_thermal_irq_thread_handler,
 						0, KBUILD_MODNAME, pci_info);
-		if (ret) {
-			dev_err(&pdev->dev, "Request IRQ %d failed\n", irq);
+		if (ret)
 			goto err_free_msi_vectors;
-		}
 
 		proc_thermal_msi_map[i] = irq;
 	}
@@ -394,10 +392,8 @@ static int proc_thermal_pci_probe(struct pci_dev *pdev, const struct pci_device_
 		ret = devm_request_threaded_irq(&pdev->dev, irq, proc_thermal_irq_handler,
 						proc_thermal_irq_thread_handler, irq_flag,
 						KBUILD_MODNAME, pci_info);
-		if (ret) {
-			dev_err(&pdev->dev, "Request IRQ %d failed\n", pdev->irq);
+		if (ret)
 			goto err_ret_tzone;
-		}
 	}
 
 	ret = thermal_zone_device_enable(pci_info->tzone);
diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c
index 1a7e134dfcf8..96279756177f 100644
--- a/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c
+++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c
@@ -491,12 +491,11 @@ int proc_thermal_rfim_add(struct pci_dev *pdev, struct proc_thermal_device *proc
 
 	if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_DVFS) {
 		ret = sysfs_create_group(&pdev->dev.kobj, &dvfs_attribute_group);
-		if (ret && proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_FIVR) {
-			sysfs_remove_group(&pdev->dev.kobj, &fivr_attribute_group);
-			return ret;
-		}
-		if (ret && proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_DLVR) {
-			sysfs_remove_group(&pdev->dev.kobj, &dlvr_attribute_group);
+		if (ret) {
+			if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_DLVR)
+				sysfs_remove_group(&pdev->dev.kobj, &dlvr_attribute_group);
+			if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_FIVR)
+				sysfs_remove_group(&pdev->dev.kobj, &fivr_attribute_group);
 			return ret;
 		}
 	}
diff --git a/drivers/thermal/intel/intel_bxt_pmic_thermal.c b/drivers/thermal/intel/intel_bxt_pmic_thermal.c
index 6312c6ba081f..aeaefbbd5d8f 100644
--- a/drivers/thermal/intel/intel_bxt_pmic_thermal.c
+++ b/drivers/thermal/intel/intel_bxt_pmic_thermal.c
@@ -245,10 +245,8 @@ static int pmic_thermal_probe(struct platform_device *pdev)
 				NULL, pmic_thermal_irq_handler,
 				IRQF_ONESHOT, "pmic_thermal", pdev);
 
-		if (ret) {
-			dev_err(dev, "request irq(%d) failed: %d\n", virq, ret);
+		if (ret)
 			return ret;
-		}
 		pmic_irq_count++;
 	}
 
diff --git a/drivers/thermal/intel/therm_throt.c b/drivers/thermal/intel/therm_throt.c
index 45a8ef4a608b..d1f9cf8bf6c5 100644
--- a/drivers/thermal/intel/therm_throt.c
+++ b/drivers/thermal/intel/therm_throt.c
@@ -14,12 +14,14 @@
  * Credits: Adapted from Zwane Mwaikambo's original code in mce_intel.c.
  *          Inspired by Ross Biro's and Al Borchers' counter code.
  */
+#include <linux/syscore_ops.h>
 #include <linux/interrupt.h>
 #include <linux/notifier.h>
 #include <linux/jiffies.h>
 #include <linux/kernel.h>
 #include <linux/percpu.h>
 #include <linux/export.h>
+#include <linux/delay.h>
 #include <linux/types.h>
 #include <linux/init.h>
 #include <linux/smp.h>
@@ -244,16 +246,23 @@ static void thermal_intr_init_pkg_clear_mask(void)
 	 * IA32_PACKAGE_THERM_STATUS.
 	 */
 
-	/* All bits except BIT 26 depend on CPUID.06H: EAX[6] = 1 */
+	/* All bits except BITs 25 and 26 depend on CPUID.06H: EAX[6] = 1 */
 	if (boot_cpu_has(X86_FEATURE_PTS))
 		therm_intr_pkg_clear_mask = (BIT(1) | BIT(3) | BIT(5) | BIT(7) | BIT(9) | BIT(11));
 
 	/*
-	 * Intel SDM Volume 2A: Thermal and Power Management Leaf
+	 * Intel SDM Volume 1: Thermal and Power Management Leaf
 	 * Bit 26: CPUID.06H: EAX[19] = 1
 	 */
 	if (boot_cpu_has(X86_FEATURE_HFI))
 		therm_intr_pkg_clear_mask |= BIT(26);
+
+	/*
+	 * Intel SDM Volume 1: Thermal and Power Management Leaf
+	 * Bit 25: CPUID.06H: EAX[24] = 1
+	 */
+	if (boot_cpu_has(X86_FEATURE_DPTI))
+		therm_intr_pkg_clear_mask |= BIT(25);
 }
 
 /*
@@ -524,6 +533,254 @@ static void thermal_throttle_remove_dev(struct device *dev)
 	sysfs_remove_group(&dev->kobj, &thermal_attr_group);
 }
 
+static int check_directed_thermal_pkg_intr_ack(void)
+{
+	unsigned int count = 15000;
+	u64 msr_val;
+
+	/*
+	 * Hardware acknowledges the directed interrupt setup in 10ms or less.
+	 * Wait 15ms to be safe.
+	 */
+	do {
+		rdmsrq(MSR_IA32_PACKAGE_THERM_STATUS, msr_val);
+		udelay(1);
+	} while (!(msr_val & PACKAGE_THERM_STATUS_DPTI_ACK) && --count);
+
+	if (!count)
+		return -ETIMEDOUT;
+
+	thermal_clear_package_intr_status(PACKAGE_LEVEL,
+					  PACKAGE_THERM_STATUS_DPTI_ACK);
+
+	return 0;
+}
+
+static void config_directed_thermal_pkg_intr(void *info)
+{
+	bool enable = *((bool *)info);
+	u64 msr_val;
+
+	rdmsrq(MSR_IA32_THERM_INTERRUPT, msr_val);
+
+	if (enable)
+		msr_val |= THERM_INT_DPTI_ENABLE;
+	else
+		msr_val &= ~THERM_INT_DPTI_ENABLE;
+
+	wrmsrq(MSR_IA32_THERM_INTERRUPT, msr_val);
+}
+
+/*
+ * Accessed from CPU hotplug callbacks and from code that runs while CPU
+ * hotplug is inactive: the init and cleanup paths as well as syscore callbacks.
+ * No extra locking needed.
+ */
+static unsigned int *directed_intr_handler_cpus;
+
+static bool directed_thermal_pkg_intr_supported(void)
+{
+	if (!boot_cpu_has(X86_FEATURE_DPTI))
+		return false;
+
+	if (!directed_intr_handler_cpus)
+		return false;
+
+	return true;
+}
+
+/*
+ * Must be called with cpu_hotplug_lock held to prevent CPUs from going offline
+ * while iterating through packages and interrupts must be enabled to avoid
+ * deadlocks in SMP function calls. The syscore shutdown callback also calls
+ * this function, but runs with CPU hotplug disabled (and interrupts enabled).
+ */
+static void disable_directed_thermal_pkg_intr_all(void)
+{
+	bool enable = false;
+	int i;
+
+	if (!directed_thermal_pkg_intr_supported())
+		return;
+
+	for (i = 0; i < topology_max_packages(); i++) {
+		if (directed_intr_handler_cpus[i] == nr_cpu_ids)
+			continue;
+
+		smp_call_function_single(directed_intr_handler_cpus[i],
+					 config_directed_thermal_pkg_intr,
+					 &enable, true);
+	}
+}
+
+static int enable_directed_thermal_pkg_intr(unsigned int cpu)
+{
+	bool enable = true;
+	u16 pkg_id;
+
+	if (!directed_thermal_pkg_intr_supported())
+		return 0;
+
+	pkg_id = topology_logical_package_id(cpu);
+	if (pkg_id >= topology_max_packages())
+		return -EINVAL;
+
+	/* Another CPU in this package already handles the directed interrupt. */
+	if (directed_intr_handler_cpus[pkg_id] != nr_cpu_ids)
+		return 0;
+
+	thermal_clear_package_intr_status(PACKAGE_LEVEL,
+					  PACKAGE_THERM_STATUS_DPTI_ACK);
+
+	config_directed_thermal_pkg_intr(&enable);
+	if (!check_directed_thermal_pkg_intr_ack()) {
+		directed_intr_handler_cpus[pkg_id] = cpu;
+		return 0;
+	}
+
+	/*
+	 * A failure indicates faulty hardware. Roll back completely so that
+	 * no other CPU tries. This is especially important during boot as all
+	 * CPUs may come online and would otherwise keep trying.
+	 */
+	enable = false;
+	config_directed_thermal_pkg_intr(&enable);
+
+	return -ETIMEDOUT;
+}
+
+static void disable_directed_thermal_pkg_intr(unsigned int cpu)
+{
+	unsigned int new_cpu;
+	bool enable;
+	u16 pkg_id;
+
+	if (!directed_thermal_pkg_intr_supported())
+		return;
+
+	pkg_id = topology_logical_package_id(cpu);
+	if (pkg_id >= topology_max_packages())
+		return;
+
+	/* Not the CPU handling the directed interrupt. */
+	if (directed_intr_handler_cpus[pkg_id] != cpu)
+		return;
+
+	/*
+	 * The package-level interrupt must remain directed after this CPU goes
+	 * offline.
+	 */
+	new_cpu = cpumask_any_but(topology_core_cpumask(cpu), cpu);
+	if (new_cpu < nr_cpu_ids) {
+		enable = true;
+		thermal_clear_package_intr_status(PACKAGE_LEVEL,
+						  PACKAGE_THERM_STATUS_DPTI_ACK);
+
+		/*
+		 * We are here via CPU hotplug. Since we are holding the
+		 * cpu_hotplug_lock, @new_cpu cannot go offline and interrupts
+		 * are enabled, so the SMP function call is safe.
+		 *
+		 * The syscore suspend callback runs with interrupts disabled,
+		 * but it does not reach this path because all the secondary
+		 * CPUs are offline.
+		 */
+		smp_call_function_single(new_cpu, config_directed_thermal_pkg_intr,
+					 &enable, true);
+	}
+
+	/*
+	 * If hardware does not acknowledge the directed interrupt setup on
+	 * @new_cpu, disable the redirection. Since no other CPU is configured
+	 * to receive the package-level interrupt, all CPUs in the package will
+	 * receive it.
+	 */
+	enable = false;
+	if (new_cpu < nr_cpu_ids && check_directed_thermal_pkg_intr_ack()) {
+		smp_call_function_single(new_cpu, config_directed_thermal_pkg_intr,
+					 &enable, true);
+
+		pr_warn_once("Failed to redirect package thermal interrupt from CPU%u to CPU%u; reverting to broadcast.\n",
+			     cpu, new_cpu);
+
+		new_cpu = nr_cpu_ids;
+	}
+
+	/*
+	 * Clear the directed interrupt on @cpu. Hardware acknowledgment can be
+	 * ignored since @cpu is going offline.
+	 */
+	config_directed_thermal_pkg_intr(&enable);
+
+	directed_intr_handler_cpus[pkg_id] = (new_cpu < nr_cpu_ids) ? new_cpu : nr_cpu_ids;
+}
+
+/*
+ * CPU0 may be handling the directed interrupt, but the CPU hotplug callbacks
+ * are not called for CPU0 during suspend and resume.
+ */
+static void directed_pkg_intr_syscore_resume(void *data)
+{
+	/*
+	 * We can't do anything to handle errors. If direction fails for CPU0,
+	 * another CPU will take over or disable direction entirely during CPU
+	 * hotplug.
+	 */
+	enable_directed_thermal_pkg_intr(0);
+}
+
+static int directed_pkg_intr_syscore_suspend(void *data)
+{
+	disable_directed_thermal_pkg_intr(0);
+
+	return 0;
+}
+
+static void directed_pkg_intr_syscore_shutdown(void *data)
+{
+	disable_directed_thermal_pkg_intr_all();
+}
+
+static const struct syscore_ops directed_pkg_intr_pm_ops = {
+	.resume = directed_pkg_intr_syscore_resume,
+	.suspend = directed_pkg_intr_syscore_suspend,
+	.shutdown = directed_pkg_intr_syscore_shutdown,
+};
+
+static struct syscore directed_pkg_intr_pm = {
+	.ops = &directed_pkg_intr_pm_ops,
+};
+
+static __init void init_directed_pkg_intr(void)
+{
+	int i;
+
+	if (!boot_cpu_has(X86_FEATURE_DPTI))
+		return;
+
+	directed_intr_handler_cpus = kmalloc_array(topology_max_packages(),
+						   sizeof(*directed_intr_handler_cpus),
+						   GFP_KERNEL);
+	if (!directed_intr_handler_cpus)
+		return;
+
+	for (i = 0; i < topology_max_packages(); i++)
+		directed_intr_handler_cpus[i] = nr_cpu_ids;
+
+	register_syscore(&directed_pkg_intr_pm);
+}
+
+static void cleanup_directed_pkg_thermal_intr(void)
+{
+	if (!directed_thermal_pkg_intr_supported())
+		return;
+
+	unregister_syscore(&directed_pkg_intr_pm);
+	disable_directed_thermal_pkg_intr_all();
+	kfree(directed_intr_handler_cpus);
+	directed_intr_handler_cpus = NULL;
+}
+
 /* Get notified when a cpu comes on/off. Be hotplug friendly. */
 static int thermal_throttle_online(unsigned int cpu)
 {
@@ -549,6 +806,11 @@ static int thermal_throttle_online(unsigned int cpu)
 	 */
 	intel_hfi_online(cpu);
 
+	if (enable_directed_thermal_pkg_intr(cpu)) {
+		pr_info_once("Failed to direct package thermal interrupts. All CPUs will receive it.\n");
+		cleanup_directed_pkg_thermal_intr();
+	}
+
 	/* Unmask the thermal vector after the above workqueues are initialized. */
 	l = apic_read(APIC_LVTTHMR);
 	apic_write(APIC_LVTTHMR, l & ~APIC_LVT_MASKED);
@@ -566,6 +828,8 @@ static int thermal_throttle_offline(unsigned int cpu)
 	l = apic_read(APIC_LVTTHMR);
 	apic_write(APIC_LVTTHMR, l | APIC_LVT_MASKED);
 
+	disable_directed_thermal_pkg_intr(cpu);
+
 	intel_hfi_offline(cpu);
 
 	cancel_delayed_work_sync(&state->package_throttle.therm_work);
@@ -585,12 +849,19 @@ static __init int thermal_throttle_init_device(void)
 	if (!atomic_read(&therm_throt_en))
 		return 0;
 
+	init_directed_pkg_intr();
+
 	intel_hfi_init();
 
 	ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "x86/therm:online",
 				thermal_throttle_online,
 				thermal_throttle_offline);
-	return ret < 0 ? ret : 0;
+	if (ret >= 0)
+		return 0;
+
+	cleanup_directed_pkg_thermal_intr();
+
+	return ret;
 }
 device_initcall(thermal_throttle_init_device);
 
diff --git a/drivers/xen/xen-acpi-pad.c b/drivers/xen/xen-acpi-pad.c
index 5b98e0e93807..2fa9c7d3581f 100644
--- a/drivers/xen/xen-acpi-pad.c
+++ b/drivers/xen/xen-acpi-pad.c
@@ -17,8 +17,6 @@
 #include <xen/xen-ops.h>
 #include <asm/xen/hypercall.h>
 
-#define ACPI_PROCESSOR_AGGREGATOR_CLASS	"acpi_pad"
-#define ACPI_PROCESSOR_AGGREGATOR_DEVICE_NAME "Processor Aggregator"
 #define ACPI_PROCESSOR_AGGREGATOR_NOTIFY 0x80
 static DEFINE_MUTEX(xen_cpu_lock);
 
@@ -117,9 +115,6 @@ static int acpi_pad_probe(struct platform_device *pdev)
 	if (!device)
 		return -ENODEV;
 
-	strcpy(acpi_device_name(device), ACPI_PROCESSOR_AGGREGATOR_DEVICE_NAME);
-	strcpy(acpi_device_class(device), ACPI_PROCESSOR_AGGREGATOR_CLASS);
-
 	status = acpi_install_notify_handler(device->handle,
 		ACPI_DEVICE_NOTIFY, acpi_pad_notify, device);
 	if (ACPI_FAILURE(status))