diff options
| author | Keyon Jie <yang.jie@linux.intel.com> | 2021-01-05 17:56:40 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-01-12 16:40:23 +0000 |
| commit | 8b66d7c58c11cf3b1a1cea738582367a96cdaaf8 (patch) | |
| tree | ef54a1a2e99e731befc04d85889acc7377365a47 /sound/soc/sof/sof-priv.h | |
| parent | f2973a1de9d9890b6ac712fb1825d3449ee9cc93 (diff) | |
| download | linux-8b66d7c58c11cf3b1a1cea738582367a96cdaaf8.tar.bz2 | |
ASoC: SOF: add mutex to protect the dsp_power_state access
There could be more than one thread read/write the dsp_power_state
simultaneously (e.g. hda_dsp_d0i3_work and sof_ipc_tx_message), add a
mutex power_state_access to make sure the access to it is mutually
exclusive.
Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <bard.liao@intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20210105155640.3725238-1-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof/sof-priv.h')
| -rw-r--r-- | sound/soc/sof/sof-priv.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h index 68da8f797403..28d19fa30614 100644 --- a/sound/soc/sof/sof-priv.h +++ b/sound/soc/sof/sof-priv.h @@ -375,6 +375,8 @@ struct snd_sof_dev { /* current DSP power state */ struct sof_dsp_power_state dsp_power_state; + /* mutex to protect the dsp_power_state access */ + struct mutex power_state_access; /* Intended power target of system suspend */ enum sof_system_suspend_state system_suspend_target; |