diff mbox series

[v1,01/12] ASoC: rockchip: pdm: fix regmap_ops hang issue

Message ID 1554298856-59028-2-git-send-email-sugar.zhang@rock-chips.com (mailing list archive)
State Accepted
Commit c85064435fe7a216ec0f0238ef2b8f7cd850a450
Headers show
Series Patches to update pdm for rockchip socs | expand

Commit Message

Sugar Zhang April 3, 2019, 1:40 p.m. UTC 
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>
---

 sound/soc/rockchip/rockchip_pdm.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/sound/soc/rockchip/rockchip_pdm.c b/sound/soc/rockchip/rockchip_pdm.c
index 400e29e..8a2e3bb 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;
 }