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authorAlan Stern <stern@rowland.harvard.edu>2006-12-06 20:32:37 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 08:39:22 -0800
commita120586873d3d64de93bd6d593d237e131994e58 (patch)
treeae284884e23268e867f748a2ab52353cf2390e89 /arch/i386/kernel/acpi
parentb30973f877fea1a3fb84e05599890fcc082a88e5 (diff)
[PATCH] Allow NULL pointers in percpu_free
The patch (as824b) makes percpu_free() ignore NULL arguments, as one would expect for a deallocation routine. (Note that free_percpu is #defined as percpu_free in include/linux/percpu.h.) A few callers are updated to remove now-unneeded tests for NULL. A few other callers already seem to assume that passing a NULL pointer to percpu_free() is okay! The patch also removes an unnecessary NULL check in percpu_depopulate(). Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel/acpi')
-rw-r--r--arch/i386/kernel/acpi/cstate.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/i386/kernel/acpi/cstate.c b/arch/i386/kernel/acpi/cstate.c
index 4664b55f623..12e937c1ce4 100644
--- a/arch/i386/kernel/acpi/cstate.c
+++ b/arch/i386/kernel/acpi/cstate.c
@@ -156,10 +156,8 @@ static int __init ffh_cstate_init(void)
static void __exit ffh_cstate_exit(void)
{
- if (cpu_cstate_entry) {
- free_percpu(cpu_cstate_entry);
- cpu_cstate_entry = NULL;
- }
+ free_percpu(cpu_cstate_entry);
+ cpu_cstate_entry = NULL;
}
arch_initcall(ffh_cstate_init);