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ASoC: SOF: PM: add check before setting d0_substate

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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>
This commit is contained in:
Keyon Jie 2019-11-02 01:13:59 +08:00 committed by Pierre Bossart
parent 1e6a45dd53
commit 031bea594f
1 changed files with 3 additions and 0 deletions
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3
sound/soc/sof/pm.c
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@ -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)