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| author | Maxim Levitsky <maximlevitsky@gmail.com> | 2010-10-15 17:20:45 +0200 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2010-10-25 01:28:52 +0100 |
| commit | 12aebf3e1ad7dc8b076dd9674ca98f1aa6859fcd (patch) | |
| tree | 545b9655e797629fa3baff874aebb866cd1c67ec | |
| parent | 480792b7bf188c29b8d4b10fee65c3a06ec5dbf7 (diff) | |
| download | op-kernel-dev-12aebf3e1ad7dc8b076dd9674ca98f1aa6859fcd.zip op-kernel-dev-12aebf3e1ad7dc8b076dd9674ca98f1aa6859fcd.tar.gz | |
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 <maximlevisky@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| -rw-r--r-- | 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); |
