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SubjectApplied "ASoC: rockchip: pdm: fix regmap_ops hang issue" to the asoc tree
The patch

ASoC: rockchip: pdm: fix regmap_ops hang issue

has been applied to the asoc tree at

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tree (usually sometime in the next 24 hours) and sent to Linus during
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From c85064435fe7a216ec0f0238ef2b8f7cd850a450 Mon Sep 17 00:00:00 2001
From: Sugar Zhang <>
Date: Wed, 3 Apr 2019 21:40:45 +0800
Subject: [PATCH] ASoC: rockchip: pdm: fix regmap_ops hang issue

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 <>
Signed-off-by: Mark Brown <>
sound/soc/rockchip/rockchip_pdm.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/sound/soc/rockchip/rockchip_pdm.c b/sound/soc/rockchip/rockchip_pdm.c
index 400e29edb1c9..8a2e3bbce3a1 100644
--- 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;
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