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bsg: fix bsg_poll() to return POLLOUT properly 

POLLOUT should be returned only if bd->queued_cmds < bd->max_queue
so that bsg_alloc_command() can proceed.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Namhyung Kim 2011-06-20 13:27:44 +02:00 committed by Jens Axboe
parent 2c53b436a3
commit 80ceb05713
1 changed files with 1 additions and 1 deletions
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2
block/bsg.c
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@ -878,7 +878,7 @@ static unsigned int bsg_poll(struct file *file, poll_table *wait)
spin_lock_irq(&bd->lock);
if (!list_empty(&bd->done_list))
mask |= POLLIN | POLLRDNORM;
if (bd->queued_cmds >= bd->max_queue)
if (bd->queued_cmds < bd->max_queue)
mask |= POLLOUT;
spin_unlock_irq(&bd->lock);