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>
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@ -17,6 +17,7 @@
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#include <linux/of_address.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <linux/time.h>
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#include <sound/core.h>
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#include <sound/dmaengine_pcm.h>
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#include <sound/pcm_params.h>
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@ -884,7 +885,7 @@ static int fsl_sai_resume(struct device *dev)
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regcache_cache_only(sai->regmap, false);
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regmap_write(sai->regmap, FSL_SAI_TCSR, FSL_SAI_CSR_SR);
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regmap_write(sai->regmap, FSL_SAI_RCSR, FSL_SAI_CSR_SR);
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msleep(1);
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usleep_range(1000, 2000);
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regmap_write(sai->regmap, FSL_SAI_TCSR, 0);
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regmap_write(sai->regmap, FSL_SAI_RCSR, 0);
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return regcache_sync(sai->regmap);
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