tree f74faa0172cc88148e00b1484fd97fa90d2d9d23
parent 145ec7d51ae507c7cc8889ad05e24af05bbd9147
author Michael Ellerman <[EMAIL PROTECTED]> Tue, 09 Aug 2005 15:20:19 +1000
committer Paul Mackerras <[EMAIL PROTECTED]> Mon, 29 Aug 2005 10:53:38 +1000
[PATCH] ppc64: unflatten_device_tree() should check if lmb_alloc() fails
unflatten_device_tree() doesn't check if lmb_alloc() succeeds or not, it
should. All it can do is panic, but at least there's an error message
(assuming you have some sort of console at that point).
Signed-off-by: Michael Ellerman <[EMAIL PROTECTED]>
arch/ppc64/kernel/prom.c | 9 +++++++--
1 files changed, 7 insertions(+), 2 deletions(-)
Signed-off-by: Paul Mackerras <[EMAIL PROTECTED]>
arch/ppc64/kernel/prom.c | 9 +++++++--
1 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/ppc64/kernel/prom.c b/arch/ppc64/kernel/prom.c
--- a/arch/ppc64/kernel/prom.c
+++ b/arch/ppc64/kernel/prom.c
@@ -950,8 +950,13 @@ void __init unflatten_device_tree(void)
DBG(" size is %lx, allocating...\n", size);
/* Allocate memory for the expanded device tree */
- mem = (unsigned long)abs_to_virt(lmb_alloc(size + 4,
- __alignof__(struct
device_node)));
+ mem = lmb_alloc(size + 4, __alignof__(struct device_node));
+ if (!mem) {
+ DBG("Couldn't allocate memory with lmb_alloc()!\n");
+ panic("Couldn't allocate memory with lmb_alloc()!\n");
+ }
+ mem = (unsigned long)abs_to_virt(mem);
+
((u32 *)mem)[size / 4] = 0xdeadbeef;
DBG(" unflattening...\n", mem);
-
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