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ASoC: rockchip: pdm: fix regmap_ops hang issue

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This is because set_fmt ops maybe called when PD is off,
and in such case, regmap_ops will lead system hang.
enale PD before doing regmap_ops.

Change-Id: I86c04679c22e4763fd2539f88371ad1d33951723
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
This commit is contained in:
Sugar Zhang 2018-01-26 17:20:51 +08:00 • committed by Tao Huang
commit e222d0efb0
1 changed files with 2 additions and 0 deletions
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2
sound/soc/rockchip/rockchip_pdm.c
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@ -208,7 +208,9 @@ static int rockchip_pdm_set_fmt(struct snd_soc_dai *cpu_dai,
return -EINVAL;
}
pm_runtime_get_sync(cpu_dai->dev);
regmap_update_bits(pdm->regmap, PDM_CLK_CTRL, mask, val);
pm_runtime_put(cpu_dai->dev);
return 0;
}