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authorPaul Mackerras <paulus@samba.org>2006-09-19 14:06:27 +1000
committerPaul Mackerras <paulus@samba.org>2006-09-20 15:09:48 +1000
commita4dc7ff08915a2035aa6d6decc53fa1deaa410bb (patch)
tree9b28af3a21f915e3fe8ed7ee163be1b1d2bfe8b0 /arch/powerpc/kernel/setup-common.c
parent19e59df4dc2e6f7b46190ee77ce7093769f597a7 (diff)
[POWERPC] Define of_read_ulong helper
There are various places where we want to extract an unsigned long value from a device-tree property that can be 1 or 2 cells in length. This replaces some open-coded calculations, and one place where we assumed without checking that properties were the length we wanted, with a little of_read_ulong() helper. Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/setup-common.c')
-rw-r--r--arch/powerpc/kernel/setup-common.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 465e7435efbc..0af3fc1bdcc9 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -304,18 +304,21 @@ struct seq_operations cpuinfo_op = {
void __init check_for_initrd(void)
{
#ifdef CONFIG_BLK_DEV_INITRD
- const unsigned long *prop;
+ const unsigned int *prop;
+ int len;
DBG(" -> check_for_initrd()\n");
if (of_chosen) {
- prop = get_property(of_chosen, "linux,initrd-start", NULL);
+ prop = get_property(of_chosen, "linux,initrd-start", &len);
if (prop != NULL) {
- initrd_start = (unsigned long)__va(*prop);
+ initrd_start = (unsigned long)
+ __va(of_read_ulong(prop, len / 4));
prop = get_property(of_chosen,
- "linux,initrd-end", NULL);
+ "linux,initrd-end", &len);
if (prop != NULL) {
- initrd_end = (unsigned long)__va(*prop);
+ initrd_end = (unsigned long)
+ __va(of_read_ulong(prop, len / 4));
initrd_below_start_ok = 1;
} else
initrd_start = 0;