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author | Lars-Peter Clausen <lars@metafoo.de> | 2016-01-27 14:26:18 +0100 |
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committer | Mark Brown <broonie@kernel.org> | 2016-01-27 13:33:50 +0000 |
commit | 712a8038cc24dba668afe82f0413714ca87184e0 (patch) | |
tree | 27c95b16404b743cf13ffb9d18d53e6f6714fa2c /arch/arm | |
parent | 92e963f50fc74041b5e9e744c330dca48e04f08d (diff) | |
download | linux-712a8038cc24dba668afe82f0413714ca87184e0.tar.gz |
ASoC: ssm4567: Reset device before regcache_sync()
When the ssm4567 is powered up the driver calles regcache_sync() to restore the register map content. regcache_sync() assumes that the device is in its power-on reset state. Make sure that this is the case by explicitly resetting the ssm4567 register map before calling regcache_sync() otherwise we might end up with a incorrect register map which leads to undefined behaviour. One such undefined behaviour was observed when returning from system suspend while a playback stream is active, in that case the ssm4567 was kept muted after resume. Fixes: 1ee44ce03011 ("ASoC: ssm4567: Add driver for Analog Devices SSM4567 amplifier") Reported-by: Harsha Priya <harshapriya.n@intel.com> Tested-by: Fang, Yang A <yang.a.fang@intel.com> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'arch/arm')
0 files changed, 0 insertions, 0 deletions