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ASoC: rockchip: pdm: fix regmap_ops hang issue
author
Sugar Zhang
<sugar.zhang@rock-chips.com>
Wed, 3 Apr 2019 13:40:45 +0000
(21:40 +0800)
committer
Mark Brown
<broonie@kernel.org>
Thu, 4 Apr 2019 07:59:33 +0000
(14:59 +0700)
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>
sound/soc/rockchip/rockchip_pdm.c
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diff --git
a/sound/soc/rockchip/rockchip_pdm.c
b/sound/soc/rockchip/rockchip_pdm.c
index
400e29e
..
8a2e3bb
100644
(file)
--- a/
sound/soc/rockchip/rockchip_pdm.c
+++ b/
sound/soc/rockchip/rockchip_pdm.c
@@
-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;
}