8 files changed, 138 insertions, 151 deletions

diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 4e37fc3f1a9e..0728b5c08f02 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -1585,7 +1585,7 @@ static void alps_flush_packet(struct timer_list *t)
 	struct alps_data *priv = from_timer(priv, t, timer);
 	struct psmouse *psmouse = priv->psmouse;
 
-	serio_pause_rx(psmouse->ps2dev.serio);
+	guard(serio_pause_rx)(psmouse->ps2dev.serio);
 
 	if (psmouse->pktcnt == psmouse->pktsize) {
 
@@ -1605,8 +1605,6 @@ static void alps_flush_packet(struct timer_list *t)
 		}
 		psmouse->pktcnt = 0;
 	}
-
-	serio_continue_rx(psmouse->ps2dev.serio);
 }
 
 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
diff --git a/drivers/input/mouse/amimouse.c b/drivers/input/mouse/amimouse.c
index 2fbbaeb76d70..d203c2a6c438 100644
--- a/drivers/input/mouse/amimouse.c
+++ b/drivers/input/mouse/amimouse.c
@@ -139,7 +139,7 @@ static void __exit amimouse_remove(struct platform_device *pdev)
  * triggering a section mismatch warning.
  */
 static struct platform_driver amimouse_driver __refdata = {
-	.remove_new = __exit_p(amimouse_remove),
+	.remove = __exit_p(amimouse_remove),
 	.driver   = {
 		.name	= "amiga-mouse",
 	},
diff --git a/drivers/input/mouse/byd.c b/drivers/input/mouse/byd.c
index 221a553f45cd..654b38d249f3 100644
--- a/drivers/input/mouse/byd.c
+++ b/drivers/input/mouse/byd.c
@@ -254,13 +254,12 @@ static void byd_clear_touch(struct timer_list *t)
 	struct byd_data *priv = from_timer(priv, t, timer);
 	struct psmouse *psmouse = priv->psmouse;
 
-	serio_pause_rx(psmouse->ps2dev.serio);
+	guard(serio_pause_rx)(psmouse->ps2dev.serio);
+
 	priv->touch = false;
 
 	byd_report_input(psmouse);
 
-	serio_continue_rx(psmouse->ps2dev.serio);
-
 	/*
 	 * Move cursor back to center of pad when we lose touch - this
 	 * specifically improves user experience when moving cursor with one
diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
index 7521981274bd..a841883660fb 100644
--- a/drivers/input/mouse/elan_i2c_core.c
+++ b/drivers/input/mouse/elan_i2c_core.c
@@ -541,7 +541,8 @@ static int elan_update_firmware(struct elan_tp_data *data,
 
 	dev_dbg(&client->dev, "Starting firmware update....\n");
 
-	disable_irq(client->irq);
+	guard(disable_irq)(&client->irq);
+
 	data->in_fw_update = true;
 
 	retval = __elan_update_firmware(data, fw);
@@ -555,7 +556,6 @@ static int elan_update_firmware(struct elan_tp_data *data,
 	}
 
 	data->in_fw_update = false;
-	enable_irq(client->irq);
 
 	return retval;
 }
@@ -621,8 +621,6 @@ static ssize_t elan_sysfs_update_fw(struct device *dev,
 				    const char *buf, size_t count)
 {
 	struct elan_tp_data *data = dev_get_drvdata(dev);
-	const struct firmware *fw;
-	char *fw_name;
 	int error;
 	const u8 *fw_signature;
 	static const u8 signature[] = {0xAA, 0x55, 0xCC, 0x33, 0xFF, 0xFF};
@@ -631,15 +629,16 @@ static ssize_t elan_sysfs_update_fw(struct device *dev,
 		return -EINVAL;
 
 	/* Look for a firmware with the product id appended. */
-	fw_name = kasprintf(GFP_KERNEL, ETP_FW_NAME, data->product_id);
+	const char *fw_name __free(kfree) =
+		kasprintf(GFP_KERNEL, ETP_FW_NAME, data->product_id);
 	if (!fw_name) {
 		dev_err(dev, "failed to allocate memory for firmware name\n");
 		return -ENOMEM;
 	}
 
 	dev_info(dev, "requesting fw '%s'\n", fw_name);
+	const struct firmware *fw __free(firmware) = NULL;
 	error = request_firmware(&fw, fw_name, dev);
-	kfree(fw_name);
 	if (error) {
 		dev_err(dev, "failed to request firmware: %d\n", error);
 		return error;
@@ -651,46 +650,36 @@ static ssize_t elan_sysfs_update_fw(struct device *dev,
 		dev_err(dev, "signature mismatch (expected %*ph, got %*ph)\n",
 			(int)sizeof(signature), signature,
 			(int)sizeof(signature), fw_signature);
-		error = -EBADF;
-		goto out_release_fw;
+		return -EBADF;
 	}
 
-	error = mutex_lock_interruptible(&data->sysfs_mutex);
-	if (error)
-		goto out_release_fw;
-
-	error = elan_update_firmware(data, fw);
-
-	mutex_unlock(&data->sysfs_mutex);
+	scoped_cond_guard(mutex_intr, return -EINTR, &data->sysfs_mutex) {
+		error = elan_update_firmware(data, fw);
+		if (error)
+			return error;
+	}
 
-out_release_fw:
-	release_firmware(fw);
-	return error ?: count;
+	return count;
 }
 
-static ssize_t calibrate_store(struct device *dev,
-			       struct device_attribute *attr,
-			       const char *buf, size_t count)
+static int elan_calibrate(struct elan_tp_data *data)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct elan_tp_data *data = i2c_get_clientdata(client);
+	struct i2c_client *client = data->client;
+	struct device *dev = &client->dev;
 	int tries = 20;
 	int retval;
 	int error;
 	u8 val[ETP_CALIBRATE_MAX_LEN];
 
-	retval = mutex_lock_interruptible(&data->sysfs_mutex);
-	if (retval)
-		return retval;
-
-	disable_irq(client->irq);
+	guard(disable_irq)(&client->irq);
 
 	data->mode |= ETP_ENABLE_CALIBRATE;
 	retval = data->ops->set_mode(client, data->mode);
 	if (retval) {
+		data->mode &= ~ETP_ENABLE_CALIBRATE;
 		dev_err(dev, "failed to enable calibration mode: %d\n",
 			retval);
-		goto out;
+		return retval;
 	}
 
 	retval = data->ops->calibrate(client);
@@ -728,10 +717,24 @@ out_disable_calibrate:
 		if (!retval)
 			retval = error;
 	}
-out:
-	enable_irq(client->irq);
-	mutex_unlock(&data->sysfs_mutex);
-	return retval ?: count;
+	return retval;
+}
+
+static ssize_t calibrate_store(struct device *dev,
+			       struct device_attribute *attr,
+			       const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct elan_tp_data *data = i2c_get_clientdata(client);
+	int error;
+
+	scoped_cond_guard(mutex_intr, return -EINTR, &data->sysfs_mutex) {
+		error = elan_calibrate(data);
+		if (error)
+			return error;
+	}
+
+	return count;
 }
 
 static ssize_t elan_sysfs_read_mode(struct device *dev,
@@ -743,16 +746,11 @@ static ssize_t elan_sysfs_read_mode(struct device *dev,
 	int error;
 	enum tp_mode mode;
 
-	error = mutex_lock_interruptible(&data->sysfs_mutex);
-	if (error)
-		return error;
-
-	error = data->ops->iap_get_mode(data->client, &mode);
-
-	mutex_unlock(&data->sysfs_mutex);
-
-	if (error)
-		return error;
+	scoped_cond_guard(mutex_intr, return -EINTR, &data->sysfs_mutex) {
+		error = data->ops->iap_get_mode(data->client, &mode);
+		if (error)
+			return error;
+	}
 
 	return sysfs_emit(buf, "%d\n", (int)mode);
 }
@@ -783,44 +781,40 @@ static const struct attribute_group elan_sysfs_group = {
 	.attrs = elan_sysfs_entries,
 };
 
-static ssize_t acquire_store(struct device *dev, struct device_attribute *attr,
-			     const char *buf, size_t count)
+static int elan_acquire_baseline(struct elan_tp_data *data)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct elan_tp_data *data = i2c_get_clientdata(client);
-	int error;
+	struct i2c_client *client = data->client;
+	struct device *dev = &client->dev;
 	int retval;
+	int error;
 
-	retval = mutex_lock_interruptible(&data->sysfs_mutex);
-	if (retval)
-		return retval;
-
-	disable_irq(client->irq);
+	guard(disable_irq)(&client->irq);
 
 	data->baseline_ready = false;
 
 	data->mode |= ETP_ENABLE_CALIBRATE;
-	retval = data->ops->set_mode(data->client, data->mode);
+	retval = data->ops->set_mode(client, data->mode);
 	if (retval) {
+		data->mode &= ~ETP_ENABLE_CALIBRATE;
 		dev_err(dev, "Failed to enable calibration mode to get baseline: %d\n",
 			retval);
-		goto out;
+		return retval;
 	}
 
 	msleep(250);
 
-	retval = data->ops->get_baseline_data(data->client, true,
+	retval = data->ops->get_baseline_data(client, true,
 					      &data->max_baseline);
 	if (retval) {
-		dev_err(dev, "Failed to read max baseline form device: %d\n",
+		dev_err(dev, "Failed to read max baseline from device: %d\n",
 			retval);
 		goto out_disable_calibrate;
 	}
 
-	retval = data->ops->get_baseline_data(data->client, false,
+	retval = data->ops->get_baseline_data(client, false,
 					      &data->min_baseline);
 	if (retval) {
-		dev_err(dev, "Failed to read min baseline form device: %d\n",
+		dev_err(dev, "Failed to read min baseline from device: %d\n",
 			retval);
 		goto out_disable_calibrate;
 	}
@@ -829,17 +823,31 @@ static ssize_t acquire_store(struct device *dev, struct device_attribute *attr,
 
 out_disable_calibrate:
 	data->mode &= ~ETP_ENABLE_CALIBRATE;
-	error = data->ops->set_mode(data->client, data->mode);
+	error = data->ops->set_mode(client, data->mode);
 	if (error) {
 		dev_err(dev, "Failed to disable calibration mode after acquiring baseline: %d\n",
 			error);
 		if (!retval)
 			retval = error;
 	}
-out:
-	enable_irq(client->irq);
-	mutex_unlock(&data->sysfs_mutex);
-	return retval ?: count;
+
+	return retval;
+}
+
+static ssize_t acquire_store(struct device *dev, struct device_attribute *attr,
+			     const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct elan_tp_data *data = i2c_get_clientdata(client);
+	int error;
+
+	scoped_cond_guard(mutex_intr, return -EINTR, &data->sysfs_mutex) {
+		error = elan_acquire_baseline(data);
+		if (error)
+			return error;
+	}
+
+	return count;
 }
 
 static ssize_t min_show(struct device *dev,
@@ -847,22 +855,15 @@ static ssize_t min_show(struct device *dev,
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct elan_tp_data *data = i2c_get_clientdata(client);
-	int retval;
 
-	retval = mutex_lock_interruptible(&data->sysfs_mutex);
-	if (retval)
-		return retval;
+	scoped_guard(mutex_intr, &data->sysfs_mutex) {
+		if (!data->baseline_ready)
+			return -ENODATA;
 
-	if (!data->baseline_ready) {
-		retval = -ENODATA;
-		goto out;
+		return sysfs_emit(buf, "%d", data->min_baseline);
 	}
 
-	retval = sysfs_emit(buf, "%d", data->min_baseline);
-
-out:
-	mutex_unlock(&data->sysfs_mutex);
-	return retval;
+	return -EINTR;
 }
 
 static ssize_t max_show(struct device *dev,
@@ -870,25 +871,17 @@ static ssize_t max_show(struct device *dev,
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct elan_tp_data *data = i2c_get_clientdata(client);
-	int retval;
 
-	retval = mutex_lock_interruptible(&data->sysfs_mutex);
-	if (retval)
-		return retval;
+	scoped_guard(mutex_intr, &data->sysfs_mutex) {
+		if (!data->baseline_ready)
+			return -ENODATA;
 
-	if (!data->baseline_ready) {
-		retval = -ENODATA;
-		goto out;
+		return sysfs_emit(buf, "%d", data->max_baseline);
 	}
 
-	retval = sysfs_emit(buf, "%d", data->max_baseline);
-
-out:
-	mutex_unlock(&data->sysfs_mutex);
-	return retval;
+	return -EINTR;
 }
 
-
 static DEVICE_ATTR_WO(acquire);
 static DEVICE_ATTR_RO(min);
 static DEVICE_ATTR_RO(max);
@@ -1323,43 +1316,54 @@ static int elan_probe(struct i2c_client *client)
 	return 0;
 }
 
+static int __elan_suspend(struct elan_tp_data *data)
+{
+	struct i2c_client *client = data->client;
+	int error;
+
+	if (device_may_wakeup(&client->dev))
+		return elan_sleep(data);
+
+	/* Touchpad is not a wakeup source */
+	error = elan_set_power(data, false);
+	if (error)
+		return error;
+
+	error = regulator_disable(data->vcc);
+	if (error) {
+		dev_err(&client->dev,
+			"failed to disable regulator when suspending: %d\n",
+			error);
+		/* Attempt to power the chip back up */
+		elan_set_power(data, true);
+		return error;
+	}
+
+	return 0;
+}
+
 static int elan_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct elan_tp_data *data = i2c_get_clientdata(client);
-	int ret;
+	int error;
 
 	/*
 	 * We are taking the mutex to make sure sysfs operations are
 	 * complete before we attempt to bring the device into low[er]
 	 * power mode.
 	 */
-	ret = mutex_lock_interruptible(&data->sysfs_mutex);
-	if (ret)
-		return ret;
-
-	disable_irq(client->irq);
+	scoped_cond_guard(mutex_intr, return -EINTR, &data->sysfs_mutex) {
+		disable_irq(client->irq);
 
-	if (device_may_wakeup(dev)) {
-		ret = elan_sleep(data);
-	} else {
-		ret = elan_set_power(data, false);
-		if (ret)
-			goto err;
-
-		ret = regulator_disable(data->vcc);
-		if (ret) {
-			dev_err(dev, "error %d disabling regulator\n", ret);
-			/* Attempt to power the chip back up */
-			elan_set_power(data, true);
+		error = __elan_suspend(data);
+		if (error) {
+			enable_irq(client->irq);
+			return error;
 		}
 	}
 
-err:
-	if (ret)
-		enable_irq(client->irq);
-	mutex_unlock(&data->sysfs_mutex);
-	return ret;
+	return 0;
 }
 
 static int elan_resume(struct device *dev)
diff --git a/drivers/input/mouse/elan_i2c_i2c.c b/drivers/input/mouse/elan_i2c_i2c.c
index 15cf4463b64e..a9057d124a88 100644
--- a/drivers/input/mouse/elan_i2c_i2c.c
+++ b/drivers/input/mouse/elan_i2c_i2c.c
@@ -628,12 +628,11 @@ static int elan_i2c_write_fw_block(struct i2c_client *client, u16 fw_page_size,
 				   const u8 *page, u16 checksum, int idx)
 {
 	struct device *dev = &client->dev;
-	u8 *page_store;
 	u8 val[3];
 	u16 result;
 	int ret, error;
 
-	page_store = kmalloc(fw_page_size + 4, GFP_KERNEL);
+	u8 *page_store __free(kfree) = kmalloc(fw_page_size + 4, GFP_KERNEL);
 	if (!page_store)
 		return -ENOMEM;
 
@@ -647,7 +646,7 @@ static int elan_i2c_write_fw_block(struct i2c_client *client, u16 fw_page_size,
 	if (ret != fw_page_size + 4) {
 		error = ret < 0 ? ret : -EIO;
 		dev_err(dev, "Failed to write page %d: %d\n", idx, error);
-		goto exit;
+		return error;
 	}
 
 	/* Wait for F/W to update one page ROM data. */
@@ -656,20 +655,17 @@ static int elan_i2c_write_fw_block(struct i2c_client *client, u16 fw_page_size,
 	error = elan_i2c_read_cmd(client, ETP_I2C_IAP_CTRL_CMD, val);
 	if (error) {
 		dev_err(dev, "Failed to read IAP write result: %d\n", error);
-		goto exit;
+		return error;
 	}
 
 	result = le16_to_cpup((__le16 *)val);
 	if (result & (ETP_FW_IAP_PAGE_ERR | ETP_FW_IAP_INTF_ERR)) {
 		dev_err(dev, "IAP reports failed write: %04hx\n",
 			result);
-		error = -EIO;
-		goto exit;
+		return -EIO;
 	}
 
-exit:
-	kfree(page_store);
-	return error;
+	return 0;
 }
 
 static int elan_i2c_finish_fw_update(struct i2c_client *client,
diff --git a/drivers/input/mouse/psmouse-smbus.c b/drivers/input/mouse/psmouse-smbus.c
index 2a2459b1b4f2..93420f07b7d0 100644
--- a/drivers/input/mouse/psmouse-smbus.c
+++ b/drivers/input/mouse/psmouse-smbus.c
@@ -35,7 +35,7 @@ static void psmouse_smbus_check_adapter(struct i2c_adapter *adapter)
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_HOST_NOTIFY))
 		return;
 
-	mutex_lock(&psmouse_smbus_mutex);
+	guard(mutex)(&psmouse_smbus_mutex);
 
 	list_for_each_entry(smbdev, &psmouse_smbus_list, node) {
 		if (smbdev->dead)
@@ -55,15 +55,13 @@ static void psmouse_smbus_check_adapter(struct i2c_adapter *adapter)
 			    "SMBus candidate adapter appeared, triggering rescan\n");
 		serio_rescan(smbdev->psmouse->ps2dev.serio);
 	}
-
-	mutex_unlock(&psmouse_smbus_mutex);
 }
 
 static void psmouse_smbus_detach_i2c_client(struct i2c_client *client)
 {
 	struct psmouse_smbus_dev *smbdev, *tmp;
 
-	mutex_lock(&psmouse_smbus_mutex);
+	guard(mutex)(&psmouse_smbus_mutex);
 
 	list_for_each_entry_safe(smbdev, tmp, &psmouse_smbus_list, node) {
 		if (smbdev->client != client)
@@ -85,8 +83,6 @@ static void psmouse_smbus_detach_i2c_client(struct i2c_client *client)
 			kfree(smbdev);
 		}
 	}
-
-	mutex_unlock(&psmouse_smbus_mutex);
 }
 
 static int psmouse_smbus_notifier_call(struct notifier_block *nb,
@@ -171,7 +167,7 @@ static void psmouse_smbus_disconnect(struct psmouse *psmouse)
 {
 	struct psmouse_smbus_dev *smbdev = psmouse->private;
 
-	mutex_lock(&psmouse_smbus_mutex);
+	guard(mutex)(&psmouse_smbus_mutex);
 
 	if (smbdev->dead) {
 		list_del(&smbdev->node);
@@ -186,8 +182,6 @@ static void psmouse_smbus_disconnect(struct psmouse *psmouse)
 		psmouse_smbus_schedule_remove(smbdev->client);
 	}
 
-	mutex_unlock(&psmouse_smbus_mutex);
-
 	psmouse->private = NULL;
 }
 
@@ -219,7 +213,7 @@ void psmouse_smbus_cleanup(struct psmouse *psmouse)
 {
 	struct psmouse_smbus_dev *smbdev, *tmp;
 
-	mutex_lock(&psmouse_smbus_mutex);
+	guard(mutex)(&psmouse_smbus_mutex);
 
 	list_for_each_entry_safe(smbdev, tmp, &psmouse_smbus_list, node) {
 		if (psmouse == smbdev->psmouse) {
@@ -227,8 +221,6 @@ void psmouse_smbus_cleanup(struct psmouse *psmouse)
 			kfree(smbdev);
 		}
 	}
-
-	mutex_unlock(&psmouse_smbus_mutex);
 }
 
 int psmouse_smbus_init(struct psmouse *psmouse,
@@ -267,9 +259,9 @@ int psmouse_smbus_init(struct psmouse *psmouse,
 	psmouse->disconnect = psmouse_smbus_disconnect;
 	psmouse->resync_time = 0;
 
-	mutex_lock(&psmouse_smbus_mutex);
-	list_add_tail(&smbdev->node, &psmouse_smbus_list);
-	mutex_unlock(&psmouse_smbus_mutex);
+	scoped_guard(mutex, &psmouse_smbus_mutex) {
+		list_add_tail(&smbdev->node, &psmouse_smbus_list);
+	}
 
 	/* Bind to already existing adapters right away */
 	error = i2c_for_each_dev(smbdev, psmouse_smbus_create_companion);
@@ -293,9 +285,9 @@ int psmouse_smbus_init(struct psmouse *psmouse,
 	smbdev->board.platform_data = NULL;
 
 	if (error < 0 || !leave_breadcrumbs) {
-		mutex_lock(&psmouse_smbus_mutex);
-		list_del(&smbdev->node);
-		mutex_unlock(&psmouse_smbus_mutex);
+		scoped_guard(mutex, &psmouse_smbus_mutex) {
+			list_del(&smbdev->node);
+		}
 
 		kfree(smbdev);
 	}
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 380aa1614442..2735f86c23cc 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -650,9 +650,8 @@ static int synaptics_pt_start(struct serio *serio)
 	struct psmouse *parent = psmouse_from_serio(serio->parent);
 	struct synaptics_data *priv = parent->private;
 
-	serio_pause_rx(parent->ps2dev.serio);
+	guard(serio_pause_rx)(parent->ps2dev.serio);
 	priv->pt_port = serio;
-	serio_continue_rx(parent->ps2dev.serio);
 
 	return 0;
 }
@@ -662,9 +661,8 @@ static void synaptics_pt_stop(struct serio *serio)
 	struct psmouse *parent = psmouse_from_serio(serio->parent);
 	struct synaptics_data *priv = parent->private;
 
-	serio_pause_rx(parent->ps2dev.serio);
+	guard(serio_pause_rx)(parent->ps2dev.serio);
 	priv->pt_port = NULL;
-	serio_continue_rx(parent->ps2dev.serio);
 }
 
 static int synaptics_is_pt_packet(u8 *buf)
diff --git a/drivers/input/mouse/synaptics.h b/drivers/input/mouse/synaptics.h
index 08533d1b1b16..899aee598632 100644
--- a/drivers/input/mouse/synaptics.h
+++ b/drivers/input/mouse/synaptics.h
@@ -21,7 +21,7 @@
 #define SYN_QUE_EXT_MIN_COORDS		0x0f
 #define SYN_QUE_MEXT_CAPAB_10		0x10
 
-/* synatics modes */
+/* synaptics modes */
 #define SYN_BIT_ABSOLUTE_MODE		BIT(7)
 #define SYN_BIT_HIGH_RATE		BIT(6)
 #define SYN_BIT_SLEEP_MODE		BIT(3)