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| author | Xiubo Li <lixiubo@cmss.chinamobile.com> | 2016-01-15 19:35:24 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-01-22 16:47:52 +0000 |
| commit | 512feb4e19a262ea0dfd7209506a998897feaadc (patch) | |
| tree | 8586f494132b8d384e332acf759284630f5ffaa6 | |
| parent | c1df29648f1e3ffb8bac38e27a22b50f5c019adf (diff) | |
| download | lwn-512feb4e19a262ea0dfd7209506a998897feaadc.tar.gz lwn-512feb4e19a262ea0dfd7209506a998897feaadc.zip | |
ASoC: fsl_sai: 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>
| -rw-r--r-- | sound/soc/fsl/fsl_sai.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c index 43ba5dc26775..4919de9684eb 100644 --- a/sound/soc/fsl/fsl_sai.c +++ b/sound/soc/fsl/fsl_sai.c @@ -17,6 +17,7 @@ #include <linux/of_address.h> #include <linux/regmap.h> #include <linux/slab.h> +#include <linux/time.h> #include <sound/core.h> #include <sound/dmaengine_pcm.h> #include <sound/pcm_params.h> @@ -884,7 +885,7 @@ static int fsl_sai_resume(struct device *dev) regcache_cache_only(sai->regmap, false); regmap_write(sai->regmap, FSL_SAI_TCSR, FSL_SAI_CSR_SR); regmap_write(sai->regmap, FSL_SAI_RCSR, FSL_SAI_CSR_SR); - msleep(1); + usleep_range(1000, 2000); regmap_write(sai->regmap, FSL_SAI_TCSR, 0); regmap_write(sai->regmap, FSL_SAI_RCSR, 0); return regcache_sync(sai->regmap); |