diff options
| author | Keyon Jie <yang.jie@linux.intel.com> | 2019-11-11 16:33:41 -0600 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-11-12 12:10:21 +0000 |
| commit | 58a972efd21bb5adadd97f2546693ec64bfc99b9 (patch) | |
| tree | 656583f38b51c82f8bb0034cbf3182db86a30606 /sound | |
| parent | 74b4dd04b19cc03e1cc369d9c371cf4206367df4 (diff) | |
ASoC: SOF: PM: add check before setting d0_substate
Add check before seeting d0_substate and return success if Audio DSP is
already in the target substate.
Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191111223343.19986-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/sof/pm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/soc/sof/pm.c b/sound/soc/sof/pm.c index 3204c92f0e7d..b89810bf3230 100644 --- a/sound/soc/sof/pm.c +++ b/sound/soc/sof/pm.c @@ -416,6 +416,9 @@ int snd_sof_set_d0_substate(struct snd_sof_dev *sdev, { int ret; + if (sdev->d0_substate == d0_substate) + return 0; + /* do platform specific set_state */ ret = snd_sof_dsp_set_power_state(sdev, d0_substate); if (ret < 0) |