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path: root/drivers/base/cacheinfo.c
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Diffstat (limited to 'drivers/base/cacheinfo.c')
-rw-r--r--drivers/base/cacheinfo.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
index 764280a91776..e9fd32e91668 100644
--- a/drivers/base/cacheinfo.c
+++ b/drivers/base/cacheinfo.c
@@ -148,7 +148,11 @@ static void cache_shared_cpu_map_remove(unsigned int cpu)
if (sibling == cpu) /* skip itself */
continue;
+
sib_cpu_ci = get_cpu_cacheinfo(sibling);
+ if (!sib_cpu_ci->info_list)
+ continue;
+
sib_leaf = sib_cpu_ci->info_list + index;
cpumask_clear_cpu(cpu, &sib_leaf->shared_cpu_map);
cpumask_clear_cpu(sibling, &this_leaf->shared_cpu_map);
@@ -159,6 +163,9 @@ static void cache_shared_cpu_map_remove(unsigned int cpu)
static void free_cache_attributes(unsigned int cpu)
{
+ if (!per_cpu_cacheinfo(cpu))
+ return;
+
cache_shared_cpu_map_remove(cpu);
kfree(per_cpu_cacheinfo(cpu));
@@ -514,8 +521,7 @@ static int cacheinfo_cpu_callback(struct notifier_block *nfb,
break;
case CPU_DEAD:
cache_remove_dev(cpu);
- if (per_cpu_cacheinfo(cpu))
- free_cache_attributes(cpu);
+ free_cache_attributes(cpu);
break;
}
return notifier_from_errno(rc);