[PATCH] spi: core: Replace msleep with usleep_range to get more accurate sleep time

[PATCH] spi: core: Replace msleep with usleep_range to get more accurate sleep time

[Axel Lin]

Fixes below checkpatch warning:
WARNING: msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.txt
+               msleep(10);

Signed-off-by: Axel Lin <axel.lin-8E1dMatC8ynQT0dZR+AlfA@public.gmane.org>
---
 drivers/spi/spi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 2b664c8..055580f 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1078,7 +1078,7 @@ static int spi_stop_queue(struct spi_master *master)
 	 */
 	while ((!list_empty(&master->queue) || master->busy) && limit--) {
 		spin_unlock_irqrestore(&master->queue_lock, flags);
-		msleep(10);
+		usleep_range(10000, 11000);
 		spin_lock_irqsave(&master->queue_lock, flags);
 	}
 
-- 
1.8.1.2



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Re: [PATCH] spi: core: Replace msleep with usleep_range to get more accurate sleep time

[Mark Brown]

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On Fri, Feb 21, 2014 at 09:15:18AM +0800, Axel Lin wrote:
> Fixes below checkpatch warning:
> WARNING: msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.txt
> +               msleep(10);

Applied, thanks, though really we don't care how long the delay is.

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