summaryrefslogtreecommitdiffstats
path: root/sound/soc/fsl
diff options
context:
space:
mode:
authorXiubo Li <lixiubo@cmss.chinamobile.com>2016-01-15 19:35:25 +0800
committerMark Brown <broonie@kernel.org>2016-01-22 16:48:34 +0000
commit0d55ad456337487e8cdb72acdd520050e575a0bd (patch)
treea2110934423c2848e961cbe6e192560244726d46 /sound/soc/fsl
parent822ad70a2f5c420da5baa9f4354e6b7813ca6da9 (diff)
downloadop-kernel-dev-0d55ad456337487e8cdb72acdd520050e575a0bd.zip
op-kernel-dev-0d55ad456337487e8cdb72acdd520050e575a0bd.tar.gz
ASoC: fsl-mpc5200: Use usleep_range() instead of msleep()
Since msleep() will sleep longer than intended time for values less than 20ms, this patch allows the use of usleep_range for just 1ms. usleep_range is a finer precision implementation of msleep and is designed to be a drop-in replacement for udelay where a precise sleep/busy-wait is unnecessary. More details see Documentation/timers/timers-howto.txt. Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/fsl')
-rw-r--r--sound/soc/fsl/mpc5200_psc_ac97.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/soc/fsl/mpc5200_psc_ac97.c b/sound/soc/fsl/mpc5200_psc_ac97.c
index 0bab760..243700c 100644
--- a/sound/soc/fsl/mpc5200_psc_ac97.c
+++ b/sound/soc/fsl/mpc5200_psc_ac97.c
@@ -13,6 +13,7 @@
#include <linux/of_device.h>
#include <linux/of_platform.h>
#include <linux/delay.h>
+#include <linux/time.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
@@ -127,7 +128,7 @@ static void psc_ac97_cold_reset(struct snd_ac97 *ac97)
mutex_unlock(&psc_dma->mutex);
- msleep(1);
+ usleep_range(1000, 2000);
psc_ac97_warm_reset(ac97);
}
OpenPOWER on IntegriCloud