Merge tag 'devicetree-fixes-for-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:

 - Disable #address-cells/#size-cells warning on coreboot (Chromebooks)
   platforms

 - Add missing root #address-cells/#size-cells in default empty DT

 - Fix uninitialized variable in of_irq_parse_one()

 - Fix interrupt-map cell length check in of_irq_parse_imap_parent()

 - Fix refcount handling in __of_get_dma_parent()

 - Fix error path in of_parse_phandle_with_args_map()

 - Fix dma-ranges handling with flags cells

 - Drop explicit fw_devlink handling of 'interrupt-parent'

 - Fix "compression" typo in fixed-partitions binding

 - Unify "fsl,liodn" property type definitions

* tag 'devicetree-fixes-for-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of: Add coreboot firmware to excluded default cells list
  of/irq: Fix using uninitialized variable @addr_len in API of_irq_parse_one()
  of/irq: Fix interrupt-map cell length check in of_irq_parse_imap_parent()
  of: Fix refcount leakage for OF node returned by __of_get_dma_parent()
  of: Fix error path in of_parse_phandle_with_args_map()
  dt-bindings: mtd: fixed-partitions: Fix "compression" typo
  of: Add #address-cells/#size-cells in the device-tree root empty node
  dt-bindings: Unify "fsl,liodn" type definitions
  of: address: Preserve the flags portion on 1:1 dma-ranges mapping
  of/unittest: Add empty dma-ranges address translation tests
  of: property: fw_devlink: Do not use interrupt-parent directly

7 files changed, 66 insertions, 11 deletions

diff --git a/drivers/of/address.c b/drivers/of/address.c
index c5b925ac469f..c1f1c810e810 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -459,7 +459,8 @@ static int of_translate_one(const struct device_node *parent, const struct of_bu
 	}
 	if (ranges == NULL || rlen == 0) {
 		offset = of_read_number(addr, na);
-		memset(addr, 0, pna * 4);
+		/* set address to zero, pass flags through */
+		memset(addr + pbus->flag_cells, 0, (pna - pbus->flag_cells) * 4);
 		pr_debug("empty ranges; 1:1 translation\n");
 		goto finish;
 	}
@@ -619,7 +620,7 @@ struct device_node *__of_get_dma_parent(const struct device_node *np)
 	if (ret < 0)
 		return of_get_parent(np);
 
-	return of_node_get(args.np);
+	return args.np;
 }
 #endif
 
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 7dc394255a0a..6f5abea2462a 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -88,7 +88,8 @@ static bool __of_node_is_type(const struct device_node *np, const char *type)
 }
 
 #define EXCLUDED_DEFAULT_CELLS_PLATFORMS ( \
-	IS_ENABLED(CONFIG_SPARC) \
+	IS_ENABLED(CONFIG_SPARC) || \
+	of_find_compatible_node(NULL, NULL, "coreboot") \
 )
 
 int of_bus_n_addr_cells(struct device_node *np)
@@ -1507,8 +1508,10 @@ int of_parse_phandle_with_args_map(const struct device_node *np,
 			map_len--;
 
 			/* Check if not found */
-			if (!new)
+			if (!new) {
+				ret = -EINVAL;
 				goto put;
+			}
 
 			if (!of_device_is_available(new))
 				match = 0;
@@ -1518,17 +1521,20 @@ int of_parse_phandle_with_args_map(const struct device_node *np,
 				goto put;
 
 			/* Check for malformed properties */
-			if (WARN_ON(new_size > MAX_PHANDLE_ARGS))
-				goto put;
-			if (map_len < new_size)
+			if (WARN_ON(new_size > MAX_PHANDLE_ARGS) ||
+			    map_len < new_size) {
+				ret = -EINVAL;
 				goto put;
+			}
 
 			/* Move forward by new node's #<list>-cells amount */
 			map += new_size;
 			map_len -= new_size;
 		}
-		if (!match)
+		if (!match) {
+			ret = -ENOENT;
 			goto put;
+		}
 
 		/* Get the <list>-map-pass-thru property (optional) */
 		pass = of_get_property(cur, pass_name, NULL);
diff --git a/drivers/of/empty_root.dts b/drivers/of/empty_root.dts
index cf9e97a60f48..cbe169ba3db5 100644
--- a/drivers/of/empty_root.dts
+++ b/drivers/of/empty_root.dts
@@ -2,5 +2,12 @@
 /dts-v1/;
 
 / {
-
+	/*
+	 * #address-cells/#size-cells are required properties at root node.
+	 * Use 2 cells for both address cells and size cells in order to fully
+	 * support 64-bit addresses and sizes on systems using this empty root
+	 * node.
+	 */
+	#address-cells = <0x02>;
+	#size-cells = <0x02>;
 };
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 67fc0ceaa5f5..98b1cf78ecac 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -111,6 +111,7 @@ const __be32 *of_irq_parse_imap_parent(const __be32 *imap, int len, struct of_ph
 	else
 		np = of_find_node_by_phandle(be32_to_cpup(imap));
 	imap++;
+	len--;
 
 	/* Check if not found */
 	if (!np) {
@@ -354,6 +355,7 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar
 		return of_irq_parse_oldworld(device, index, out_irq);
 
 	/* Get the reg property (if any) */
+	addr_len = 0;
 	addr = of_get_property(device, "reg", &addr_len);
 
 	/* Prevent out-of-bounds read in case of longer interrupt parent address size */
diff --git a/drivers/of/property.c b/drivers/of/property.c
index 519bf9229e61..cfc8aea002e4 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -1286,7 +1286,6 @@ DEFINE_SIMPLE_PROP(iommus, "iommus", "#iommu-cells")
 DEFINE_SIMPLE_PROP(mboxes, "mboxes", "#mbox-cells")
 DEFINE_SIMPLE_PROP(io_channels, "io-channels", "#io-channel-cells")
 DEFINE_SIMPLE_PROP(io_backends, "io-backends", "#io-backend-cells")
-DEFINE_SIMPLE_PROP(interrupt_parent, "interrupt-parent", NULL)
 DEFINE_SIMPLE_PROP(dmas, "dmas", "#dma-cells")
 DEFINE_SIMPLE_PROP(power_domains, "power-domains", "#power-domain-cells")
 DEFINE_SIMPLE_PROP(hwlocks, "hwlocks", "#hwlock-cells")
@@ -1432,7 +1431,6 @@ static const struct supplier_bindings of_supplier_bindings[] = {
 	{ .parse_prop = parse_mboxes, },
 	{ .parse_prop = parse_io_channels, },
 	{ .parse_prop = parse_io_backends, },
-	{ .parse_prop = parse_interrupt_parent, },
 	{ .parse_prop = parse_dmas, .optional = true, },
 	{ .parse_prop = parse_power_domains, },
 	{ .parse_prop = parse_hwlocks, },
diff --git a/drivers/of/unittest-data/tests-address.dtsi b/drivers/of/unittest-data/tests-address.dtsi
index 3344f15c3755..f02a181bb125 100644
--- a/drivers/of/unittest-data/tests-address.dtsi
+++ b/drivers/of/unittest-data/tests-address.dtsi
@@ -114,6 +114,7 @@
 				device_type = "pci";
 				ranges = <0x82000000 0 0xe8000000 0 0xe8000000 0 0x7f00000>,
 					 <0x81000000 0 0x00000000 0 0xefff0000 0 0x0010000>;
+				dma-ranges = <0x43000000 0x10 0x00 0x00 0x00 0x00 0x10000000>;
 				reg = <0x00000000 0xd1070000 0x20000>;
 
 				pci@0,0 {
@@ -142,6 +143,7 @@
 							#size-cells = <0x01>;
 							ranges = <0xa0000000 0 0 0 0x2000000>,
 								 <0xb0000000 1 0 0 0x1000000>;
+							dma-ranges = <0xc0000000 0x43000000 0x10 0x00 0x10000000>;
 
 							dev@e0000000 {
 								reg = <0xa0001000 0x1000>,
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 42b411f32b1b..438fd70fa995 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -1213,6 +1213,44 @@ static void __init of_unittest_pci_dma_ranges(void)
 	of_node_put(np);
 }
 
+static void __init of_unittest_pci_empty_dma_ranges(void)
+{
+	struct device_node *np;
+	struct of_pci_range range;
+	struct of_pci_range_parser parser;
+
+	if (!IS_ENABLED(CONFIG_PCI))
+		return;
+
+	np = of_find_node_by_path("/testcase-data/address-tests2/pcie@d1070000/pci@0,0/dev@0,0/local-bus@0");
+	if (!np) {
+		pr_err("missing testcase data\n");
+		return;
+	}
+
+	if (of_pci_dma_range_parser_init(&parser, np)) {
+		pr_err("missing dma-ranges property\n");
+		return;
+	}
+
+	/*
+	 * Get the dma-ranges from the device tree
+	 */
+	for_each_of_pci_range(&parser, &range) {
+		unittest(range.size == 0x10000000,
+			 "for_each_of_pci_range wrong size on node %pOF size=%llx\n",
+			 np, range.size);
+		unittest(range.cpu_addr == 0x00000000,
+			 "for_each_of_pci_range wrong CPU addr (%llx) on node %pOF",
+			 range.cpu_addr, np);
+		unittest(range.pci_addr == 0xc0000000,
+			 "for_each_of_pci_range wrong DMA addr (%llx) on node %pOF",
+			 range.pci_addr, np);
+	}
+
+	of_node_put(np);
+}
+
 static void __init of_unittest_bus_ranges(void)
 {
 	struct device_node *np;
@@ -4272,6 +4310,7 @@ static int __init of_unittest(void)
 	of_unittest_dma_get_max_cpu_address();
 	of_unittest_parse_dma_ranges();
 	of_unittest_pci_dma_ranges();
+	of_unittest_pci_empty_dma_ranges();
 	of_unittest_bus_ranges();
 	of_unittest_bus_3cell_ranges();
 	of_unittest_reg();