[PATCH 3/5] MTD: blktrans: fix a race vs kthread_stop.

[Maxim Levitsky]

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 <maximlevisky at gmail.com>
---
 drivers/mtd/mtd_blkdevs.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 040c2d9..a919587 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);
-- 
1.7.1