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ASoC: rockchip: pdm: fix regmap_ops hang issue

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[ Upstream commit c85064435f ]

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.

Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sugar Zhang
2019-04-03 21:40:45 +08:00
committed by Greg Kroah-Hartman
parent 5d60a06610
commit a8f8272067
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;
}