diff options
| author | Andi Kleen <ak@suse.de> | 2007-09-11 14:02:11 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-09-12 09:28:06 -0700 |
| commit | 2966c6a03efd90197582eae8590d82c789475680 (patch) | |
| tree | 714ed95bbf4c60f682a2693a5eb3a9a24bcd029a | |
| parent | 95b08679963c78ce0d675224a6efdb5169f2bf75 (diff) | |
x86_64: Prevent doing anything from cache_remove_dev() when info setup failed.
AK: Removed the unlikelies because gcc heuristics default to unlikely
AK: for test == NULL and for negative returns.
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | arch/i386/kernel/cpu/intel_cacheinfo.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/i386/kernel/cpu/intel_cacheinfo.c b/arch/i386/kernel/cpu/intel_cacheinfo.c index d5a456d27d82..db6c25aa5776 100644 --- a/arch/i386/kernel/cpu/intel_cacheinfo.c +++ b/arch/i386/kernel/cpu/intel_cacheinfo.c @@ -515,7 +515,7 @@ static int __cpuinit detect_cache_attributes(unsigned int cpu) cpuid4_info[cpu] = kzalloc( sizeof(struct _cpuid4_info) * num_cache_leaves, GFP_KERNEL); - if (unlikely(cpuid4_info[cpu] == NULL)) + if (cpuid4_info[cpu] == NULL) return -ENOMEM; oldmask = current->cpus_allowed; @@ -748,6 +748,8 @@ static void __cpuinit cache_remove_dev(struct sys_device * sys_dev) unsigned int cpu = sys_dev->id; unsigned long i; + if (cpuid4_info[cpu] == NULL) + return; for (i = 0; i < num_cache_leaves; i++) { cache_remove_shared_cpu_map(cpu, i); kobject_unregister(&(INDEX_KOBJECT_PTR(cpu,i)->kobj)); |