From 12aebf3e1ad7dc8b076dd9674ca98f1aa6859fcd Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Fri, 15 Oct 2010 17:20:45 +0200 Subject: mtd: blktrans: fix a race vs kthread_stop There is small race window that could make kthread_stop hang forever. I found that while hacking the IR subsystem. Signed-off-by: Maxim Levitsky Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/mtd_blkdevs.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/mtd') diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 040c2d92380..a919587ed48 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -133,6 +133,10 @@ static int mtd_blktrans_thread(void *arg) if (!req && !(req = blk_fetch_request(rq))) { set_current_state(TASK_INTERRUPTIBLE); + + if (kthread_should_stop()) + set_current_state(TASK_RUNNING); + spin_unlock_irq(rq->queue_lock); schedule(); spin_lock_irq(rq->queue_lock); -- cgit v1.2.3-18-g5258