This is a note to let you know that I've just added the patch titled
ASoC: cs35l41: Verify PM runtime resume errors in IRQ handler
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-cs35l41-verify-pm-runtime-resume-errors-in-irq-.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 68e0783551f129624907fb6b468d7e6c1894f6ad
Author: Cristian Ciocaltea <cristian.ciocaltea@xxxxxxxxxxxxx>
Date: Thu Sep 7 20:10:04 2023 +0300
ASoC: cs35l41: Verify PM runtime resume errors in IRQ handler
[ Upstream commit 9f8948db9849d202dee3570507d3a0642f92d632 ]
The interrupt handler invokes pm_runtime_get_sync() without checking the
returned error code.
Add a proper verification and switch to pm_runtime_resume_and_get(), to
avoid the need to call pm_runtime_put_noidle() for decrementing the PM
usage counter before returning from the error condition.
Fixes: f517ba4924ad ("ASoC: cs35l41: Add support for hibernate memory retention mode")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@xxxxxxxxxxxxx>
Acked-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
Reviewed-by: Takashi Iwai <tiwai@xxxxxxx>
Link: https://lore.kernel.org/r/20230907171010.1447274-6-cristian.ciocaltea@xxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/codecs/cs35l41.c b/sound/soc/codecs/cs35l41.c
index 2f4b0ee93aced..e428898e42112 100644
--- a/sound/soc/codecs/cs35l41.c
+++ b/sound/soc/codecs/cs35l41.c
@@ -374,10 +374,18 @@ static irqreturn_t cs35l41_irq(int irq, void *data)
struct cs35l41_private *cs35l41 = data;
unsigned int status[4] = { 0, 0, 0, 0 };
unsigned int masks[4] = { 0, 0, 0, 0 };
- int ret = IRQ_NONE;
unsigned int i;
+ int ret;
- pm_runtime_get_sync(cs35l41->dev);
+ ret = pm_runtime_resume_and_get(cs35l41->dev);
+ if (ret < 0) {
+ dev_err(cs35l41->dev,
+ "pm_runtime_resume_and_get failed in %s: %d\n",
+ __func__, ret);
+ return IRQ_NONE;
+ }
+
+ ret = IRQ_NONE;
for (i = 0; i < ARRAY_SIZE(status); i++) {
regmap_read(cs35l41->regmap,
