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-rw-r--r--drivers/of/Kconfig10
-rw-r--r--drivers/of/address.c6
-rw-r--r--drivers/of/base.c5
-rw-r--r--drivers/of/fdt.c12
-rw-r--r--drivers/of/irq.c9
-rw-r--r--drivers/of/of_pci.c6
-rw-r--r--drivers/of/of_reserved_mem.c43
-rw-r--r--drivers/of/overlay.c5
-rw-r--r--drivers/of/platform.c8
-rw-r--r--drivers/of/unittest.c8
10 files changed, 93 insertions, 19 deletions
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index 59bb8556e43a..e2a48415d969 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -23,6 +23,16 @@ config OF_UNITTEST
If unsure, say N here, but this option is safe to enable.
+config OF_ALL_DTBS
+ bool "Build all Device Tree Blobs"
+ depends on COMPILE_TEST
+ select DTC
+ help
+ This option builds all possible Device Tree Blobs (DTBs) for the
+ current architecture.
+
+ If unsure, say N here, but this option is safe to enable.
+
config OF_FLATTREE
bool
select DTC
diff --git a/drivers/of/address.c b/drivers/of/address.c
index 384574c3987c..cd53fe4a0c86 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -330,6 +330,12 @@ int of_pci_range_to_resource(struct of_pci_range *range,
}
res->start = port;
} else {
+ if ((sizeof(resource_size_t) < 8) &&
+ upper_32_bits(range->cpu_addr)) {
+ err = -EINVAL;
+ goto invalid_range;
+ }
+
res->start = range->cpu_addr;
}
res->end = res->start + range->size - 1;
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 8b5a187a7682..017dd94f16ea 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -375,10 +375,7 @@ bool __weak arch_find_n_match_cpu_physical_id(struct device_node *cpun,
cpu, thread))
return true;
- if (__of_find_n_match_cpu_property(cpun, "reg", cpu, thread))
- return true;
-
- return false;
+ return __of_find_n_match_cpu_property(cpun, "reg", cpu, thread);
}
/**
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 6e82bc42373b..d2430298a309 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -184,7 +184,7 @@ static void * unflatten_dt_node(const void *blob,
struct property *pp, **prev_pp = NULL;
const char *pathp;
unsigned int l, allocl;
- static int depth = 0;
+ static int depth;
int old_depth;
int offset;
int has_name = 0;
@@ -813,20 +813,24 @@ static int __init early_init_dt_scan_chosen_serial(void)
if (!p || !l)
return -ENOENT;
+ /* Remove console options if present */
+ l = strchrnul(p, ':') - p;
+
/* Get the node specified by stdout-path */
- offset = fdt_path_offset(fdt, p);
+ offset = fdt_path_offset_namelen(fdt, p, l);
if (offset < 0)
return -ENODEV;
while (match->compatible[0]) {
- unsigned long addr;
+ u64 addr;
+
if (fdt_node_check_compatible(fdt, offset, match->compatible)) {
match++;
continue;
}
addr = fdt_translate_address(fdt, offset);
- if (!addr)
+ if (addr == OF_BAD_ADDR)
return -ENXIO;
of_setup_earlycon(addr, match->data);
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 0baf626da56a..902b89be7217 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -53,7 +53,7 @@ EXPORT_SYMBOL_GPL(irq_of_parse_and_map);
* Returns a pointer to the interrupt parent node, or NULL if the interrupt
* parent could not be determined.
*/
-struct device_node *of_irq_find_parent(struct device_node *child)
+static struct device_node *of_irq_find_parent(struct device_node *child)
{
struct device_node *p;
const __be32 *parp;
@@ -501,10 +501,12 @@ void __init of_irq_init(const struct of_device_id *matches)
* pointer, interrupt-parent device_node etc.
*/
desc = kzalloc(sizeof(*desc), GFP_KERNEL);
- if (WARN_ON(!desc))
+ if (WARN_ON(!desc)) {
+ of_node_put(np);
goto err;
+ }
- desc->dev = np;
+ desc->dev = of_node_get(np);
desc->interrupt_parent = of_irq_find_parent(np);
if (desc->interrupt_parent == np)
desc->interrupt_parent = NULL;
@@ -575,6 +577,7 @@ void __init of_irq_init(const struct of_device_id *matches)
err:
list_for_each_entry_safe(desc, temp_desc, &intc_desc_list, list) {
list_del(&desc->list);
+ of_node_put(desc->dev);
kfree(desc);
}
}
diff --git a/drivers/of/of_pci.c b/drivers/of/of_pci.c
index d0c8902dfbf4..ff27177f49ed 100644
--- a/drivers/of/of_pci.c
+++ b/drivers/of/of_pci.c
@@ -249,8 +249,10 @@ int of_pci_get_host_bridge_resources(struct device_node *dev,
}
err = of_pci_range_to_resource(&range, dev, res);
- if (err)
- goto conversion_failed;
+ if (err) {
+ kfree(res);
+ continue;
+ }
if (resource_type(res) == IORESOURCE_IO) {
if (!io_base) {
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index 726ebe792813..62f467b8ccae 100644
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -1,7 +1,7 @@
/*
* Device tree based initialization code for reserved memory.
*
- * Copyright (c) 2013, The Linux Foundation. All Rights Reserved.
+ * Copyright (c) 2013, 2015 The Linux Foundation. All Rights Reserved.
* Copyright (c) 2013,2014 Samsung Electronics Co., Ltd.
* http://www.samsung.com
* Author: Marek Szyprowski <m.szyprowski@samsung.com>
@@ -20,6 +20,7 @@
#include <linux/mm.h>
#include <linux/sizes.h>
#include <linux/of_reserved_mem.h>
+#include <linux/sort.h>
#define MAX_RESERVED_REGIONS 16
static struct reserved_mem reserved_mem[MAX_RESERVED_REGIONS];
@@ -197,12 +198,52 @@ static int __init __reserved_mem_init_node(struct reserved_mem *rmem)
return -ENOENT;
}
+static int __init __rmem_cmp(const void *a, const void *b)
+{
+ const struct reserved_mem *ra = a, *rb = b;
+
+ return ra->base - rb->base;
+}
+
+static void __init __rmem_check_for_overlap(void)
+{
+ int i;
+
+ if (reserved_mem_count < 2)
+ return;
+
+ sort(reserved_mem, reserved_mem_count, sizeof(reserved_mem[0]),
+ __rmem_cmp, NULL);
+ for (i = 0; i < reserved_mem_count - 1; i++) {
+ struct reserved_mem *this, *next;
+
+ this = &reserved_mem[i];
+ next = &reserved_mem[i + 1];
+ if (!(this->base && next->base))
+ continue;
+ if (this->base + this->size > next->base) {
+ phys_addr_t this_end, next_end;
+
+ this_end = this->base + this->size;
+ next_end = next->base + next->size;
+ WARN(1,
+ "Reserved memory: OVERLAP DETECTED!\n%s (%pa--%pa) overlaps with %s (%pa--%pa)\n",
+ this->name, &this->base, &this_end,
+ next->name, &next->base, &next_end);
+ }
+ }
+}
+
/**
* fdt_init_reserved_mem - allocate and init all saved reserved memory regions
*/
void __init fdt_init_reserved_mem(void)
{
int i;
+
+ /* check for overlapping reserved regions */
+ __rmem_check_for_overlap();
+
for (i = 0; i < reserved_mem_count; i++) {
struct reserved_mem *rmem = &reserved_mem[i];
unsigned long node = rmem->fdt_node;
diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
index 24e025f79299..54e5af9d7377 100644
--- a/drivers/of/overlay.c
+++ b/drivers/of/overlay.c
@@ -149,6 +149,7 @@ static int of_overlay_apply_one(struct of_overlay *ov,
pr_err("%s: Failed to apply single node @%s/%s\n",
__func__, target->full_name,
child->name);
+ of_node_put(child);
return ret;
}
}
@@ -417,8 +418,10 @@ static int overlay_subtree_check(struct device_node *tree,
return 1;
for_each_child_of_node(tree, child) {
- if (overlay_subtree_check(child, dn))
+ if (overlay_subtree_check(child, dn)) {
+ of_node_put(child);
return 1;
+ }
}
return 0;
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 1001efaedcb8..af98343614d8 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -405,8 +405,10 @@ int of_platform_bus_probe(struct device_node *root,
if (!of_match_node(matches, child))
continue;
rc = of_platform_bus_create(child, matches, NULL, parent, false);
- if (rc)
+ if (rc) {
+ of_node_put(child);
break;
+ }
}
of_node_put(root);
@@ -447,8 +449,10 @@ int of_platform_populate(struct device_node *root,
for_each_child_of_node(root, child) {
rc = of_platform_bus_create(child, matches, lookup, parent, true);
- if (rc)
+ if (rc) {
+ of_node_put(child);
break;
+ }
}
of_node_set_flag(root, OF_POPULATED_BUS);
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 9f71770b6226..e16ea5717b7f 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -205,16 +205,20 @@ static int __init of_unittest_check_node_linkage(struct device_node *np)
if (child->parent != np) {
pr_err("Child node %s links to wrong parent %s\n",
child->name, np->name);
- return -EINVAL;
+ rc = -EINVAL;
+ goto put_child;
}
rc = of_unittest_check_node_linkage(child);
if (rc < 0)
- return rc;
+ goto put_child;
count += rc;
}
return count + 1;
+put_child:
+ of_node_put(child);
+ return rc;
}
static void __init of_unittest_check_tree_linkage(void)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 02:34:35 +0100