ASoC: soc-pcm: BE dai needs prepare when pause release after resume
authorLibin Yang <libin.yang@intel.com>
Wed, 8 May 2019 02:32:41 +0000 (10:32 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 10 Jul 2019 07:54:31 +0000 (09:54 +0200)
commit6f0295c60dae6248570eda7b51d66c4b53148729
tree1475b2d697cf58aeca419c1d62cc2d66c6fdad0b
parentf9bfb7035a30c75596a58789b9956bc26c935f78
ASoC: soc-pcm: BE dai needs prepare when pause release after resume

[ Upstream commit 5087a8f17df868601cd7568299e91c28086d2b45 ]

If playback/capture is paused and system enters S3, after system returns
from suspend, BE dai needs to call prepare() callback when playback/capture
is released from pause if RESUME_INFO flag is not set.

Currently, the dpcm_be_dai_prepare() function will block calling prepare()
if the pcm is in SND_SOC_DPCM_STATE_PAUSED state. This will cause the
following test case fail if the pcm uses BE:

playback -> pause -> S3 suspend -> S3 resume -> pause release

The playback may exit abnormally when pause is released because the BE dai
prepare() is not called.

This patch allows dpcm_be_dai_prepare() to call dai prepare() callback in
SND_SOC_DPCM_STATE_PAUSED state.

Signed-off-by: Libin Yang <libin.yang@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
sound/soc/soc-pcm.c