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spi/pl022: fix stop queue procedure 

This fix prevents queue being marked as "stopped", if data exists
in the queue list.

Signed-off-by: Grzegorz Sygieda <grzegorz.sygieda@tieto.com>
Signed-off-by: Lukasz Baj <lukasz.baj@tieto.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Grzegorz Sygieda 2010-05-20 22:28:30 +00:00 committed by Grant Likely
parent 781c7b129b
commit 4a12404dda
1 changed files with 1 additions and 1 deletions
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2
drivers/spi/amba-pl022.c
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@ -1211,7 +1211,6 @@ static int stop_queue(struct pl022 *pl022)
* A wait_queue on the pl022->busy could be used, but then the common * A wait_queue on the pl022->busy could be used, but then the common
* execution path (pump_messages) would be required to call wake_up or * execution path (pump_messages) would be required to call wake_up or
* friends on every SPI message. Do this instead */ * friends on every SPI message. Do this instead */
pl022->run = QUEUE_STOPPED;
while (!list_empty(&pl022->queue) && pl022->busy && limit--) { while (!list_empty(&pl022->queue) && pl022->busy && limit--) {
spin_unlock_irqrestore(&pl022->queue_lock, flags); spin_unlock_irqrestore(&pl022->queue_lock, flags);
msleep(10); msleep(10);
@ -1220,6 +1219,7 @@ static int stop_queue(struct pl022 *pl022)
if (!list_empty(&pl022->queue) || pl022->busy) if (!list_empty(&pl022->queue) || pl022->busy)
status = -EBUSY; status = -EBUSY;
else pl022->run = QUEUE_STOPPED;
spin_unlock_irqrestore(&pl022->queue_lock, flags); spin_unlock_irqrestore(&pl022->queue_lock, flags);