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| author | Alan Stern <stern@rowland.harvard.edu> | 2006-12-06 20:32:37 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-07 08:39:22 -0800 |
| commit | a120586873d3d64de93bd6d593d237e131994e58 (patch) | |
| tree | ae284884e23268e867f748a2ab52353cf2390e89 /arch | |
| parent | b30973f877fea1a3fb84e05599890fcc082a88e5 (diff) | |
| download | lwn-a120586873d3d64de93bd6d593d237e131994e58.tar.gz lwn-a120586873d3d64de93bd6d593d237e131994e58.zip | |
[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')
| -rw-r--r-- | arch/i386/kernel/acpi/cstate.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/i386/kernel/acpi/cstate.c b/arch/i386/kernel/acpi/cstate.c index 4664b55f623e..12e937c1ce4b 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); |