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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-11-16 18:21:36 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-11-16 18:21:36 -0800
commit98c4514ff6e3072288770db66f91bdb15af8b433 (patch)
treeeb5f2541e70d27144720e1735b463471025908f0 /crypto/cryptd.c
parent644a9d3b66e6983c2c1f3b24c3006d49b184c871 (diff)
parentf4a75d2eb7b1e2206094b901be09adb31ba63681 (diff)
Merge 3.7-rc6 into char-misc-next
Diffstat (limited to 'crypto/cryptd.c')
-rw-r--r--crypto/cryptd.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/crypto/cryptd.c b/crypto/cryptd.c
index 671d4d6d14df..7bdd61b867c8 100644
--- a/crypto/cryptd.c
+++ b/crypto/cryptd.c
@@ -137,13 +137,18 @@ static void cryptd_queue_worker(struct work_struct *work)
struct crypto_async_request *req, *backlog;
cpu_queue = container_of(work, struct cryptd_cpu_queue, work);
- /* Only handle one request at a time to avoid hogging crypto
- * workqueue. preempt_disable/enable is used to prevent
- * being preempted by cryptd_enqueue_request() */
+ /*
+ * Only handle one request at a time to avoid hogging crypto workqueue.
+ * preempt_disable/enable is used to prevent being preempted by
+ * cryptd_enqueue_request(). local_bh_disable/enable is used to prevent
+ * cryptd_enqueue_request() being accessed from software interrupts.
+ */
+ local_bh_disable();
preempt_disable();
backlog = crypto_get_backlog(&cpu_queue->queue);
req = crypto_dequeue_request(&cpu_queue->queue);
preempt_enable();
+ local_bh_enable();
if (!req)
return;