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authorChen Gang <gang.chen@asianux.com>2013-08-22 06:43:37 +0000
committerHerbert Xu <herbert@gondor.apana.org.au>2013-08-29 14:37:59 +1000
commit9c823f9f7e4b392921d0d8b251bec080d58f9077 (patch)
tree2ec4cdd213f1268f088c706eadd3d95e911976d8
parenta246968edcfcfe0503fa9bcd5a444e7a5b9986dc (diff)
padata - share code between CPU_ONLINE and CPU_DOWN_FAILED, same to CPU_DOWN_PREPARE and CPU_UP_CANCELED
Share code between CPU_ONLINE and CPU_DOWN_FAILED, same to CPU_DOWN_PREPARE and CPU_UP_CANCELED. It will fix 2 bugs: "not check the return value of __padata_remove_cpu() and __padata_add_cpu()". "need add 'break' between CPU_UP_CANCELED and CPU_DOWN_FAILED". Signed-off-by: Chen Gang <gang.chen@asianux.com> Acked-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-rw-r--r--kernel/padata.c20
1 files changed, 4 insertions, 16 deletions
diff --git a/kernel/padata.c b/kernel/padata.c
index 072f4ee4eb89..2f0037a86289 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -846,6 +846,8 @@ static int padata_cpu_callback(struct notifier_block *nfb,
switch (action) {
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
+ case CPU_DOWN_FAILED:
+ case CPU_DOWN_FAILED_FROZEN:
if (!pinst_has_cpu(pinst, cpu))
break;
mutex_lock(&pinst->lock);
@@ -857,6 +859,8 @@ static int padata_cpu_callback(struct notifier_block *nfb,
case CPU_DOWN_PREPARE:
case CPU_DOWN_PREPARE_FROZEN:
+ case CPU_UP_CANCELED:
+ case CPU_UP_CANCELED_FROZEN:
if (!pinst_has_cpu(pinst, cpu))
break;
mutex_lock(&pinst->lock);
@@ -865,22 +869,6 @@ static int padata_cpu_callback(struct notifier_block *nfb,
if (err)
return notifier_from_errno(err);
break;
-
- case CPU_UP_CANCELED:
- case CPU_UP_CANCELED_FROZEN:
- if (!pinst_has_cpu(pinst, cpu))
- break;
- mutex_lock(&pinst->lock);
- __padata_remove_cpu(pinst, cpu);
- mutex_unlock(&pinst->lock);
-
- case CPU_DOWN_FAILED:
- case CPU_DOWN_FAILED_FROZEN:
- if (!pinst_has_cpu(pinst, cpu))
- break;
- mutex_lock(&pinst->lock);
- __padata_add_cpu(pinst, cpu);
- mutex_unlock(&pinst->lock);
}
return NOTIFY_OK;