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path: root/drivers/of/fdt.c
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Diffstat (limited to 'drivers/of/fdt.c')
-rw-r--r--drivers/of/fdt.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 6e82bc423..655f79db7 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -13,6 +13,7 @@
#include <linux/kernel.h>
#include <linux/initrd.h>
#include <linux/memblock.h>
+#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/of_reserved_mem.h>
@@ -184,7 +185,7 @@ 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;
@@ -436,6 +437,8 @@ static void *kernel_tree_alloc(u64 size, u64 align)
return kzalloc(size, GFP_KERNEL);
}
+static DEFINE_MUTEX(of_fdt_unflatten_mutex);
+
/**
* of_fdt_unflatten_tree - create tree of device_nodes from flat blob
*
@@ -447,7 +450,9 @@ static void *kernel_tree_alloc(u64 size, u64 align)
void of_fdt_unflatten_tree(const unsigned long *blob,
struct device_node **mynodes)
{
+ mutex_lock(&of_fdt_unflatten_mutex);
__unflatten_device_tree(blob, mynodes, &kernel_tree_alloc);
+ mutex_unlock(&of_fdt_unflatten_mutex);
}
EXPORT_SYMBOL_GPL(of_fdt_unflatten_tree);
@@ -813,20 +818,24 @@ 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);
@@ -1037,7 +1046,7 @@ void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size)
int __init __weak early_init_dt_reserve_memory_arch(phys_addr_t base,
phys_addr_t size, bool nomap)
{
- pr_err("Reserved memory not supported, ignoring range 0x%pa - 0x%pa%s\n",
+ pr_err("Reserved memory not supported, ignoring range %pa - %pa%s\n",
&base, &size, nomap ? " (nomap)" : "");
return -ENOSYS;
}