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authorTakashi Iwai <tiwai@suse.de>2012-12-03 12:55:44 +0400
committerTakashi Iwai <tiwai@suse.de>2012-12-03 12:55:44 +0400
commiteb10149d17784ad28061ba6c29025a2ef0a5e71a (patch)
treed22b6b196d8c7550d0bb1e6c39bc0b5623fa53e6 /block
parentdda415d41882449f841f88d829dd65b6ee1c374c (diff)
parent854ea639bb6b0b7ec433e0a59405f4f199ffae4f (diff)
downloadlinux-eb10149d17784ad28061ba6c29025a2ef0a5e71a.tar.xz
Merge tag 'asoc-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next
ASoC: Updates for v3.8 Very quiet release for ASoC really: - Standardisation of the logging. - DT and dmaengine support for Atmel. - Support for Wolfson ADSP cores. - New drivers for Freescale/iVeia P1022 and Maxim MAX98090.
Diffstat (limited to 'block')
-rw-r--r--block/blk-exec.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/block/blk-exec.c b/block/blk-exec.c
index 8b6dc5bd4dd0..f71eac35c1b9 100644
--- a/block/blk-exec.c
+++ b/block/blk-exec.c
@@ -52,11 +52,17 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk,
rq_end_io_fn *done)
{
int where = at_head ? ELEVATOR_INSERT_FRONT : ELEVATOR_INSERT_BACK;
+ bool is_pm_resume;
WARN_ON(irqs_disabled());
rq->rq_disk = bd_disk;
rq->end_io = done;
+ /*
+ * need to check this before __blk_run_queue(), because rq can
+ * be freed before that returns.
+ */
+ is_pm_resume = rq->cmd_type == REQ_TYPE_PM_RESUME;
spin_lock_irq(q->queue_lock);
@@ -71,7 +77,7 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk,
__elv_add_request(q, rq, where);
__blk_run_queue(q);
/* the queue is stopped so it won't be run */
- if (rq->cmd_type == REQ_TYPE_PM_RESUME)
+ if (is_pm_resume)
q->request_fn(q);
spin_unlock_irq(q->queue_lock);
}