6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Cristian Ciocaltea <cristian.ciocaltea@xxxxxxxxxxxxx>
[ 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>
---
sound/soc/codecs/cs35l41.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/cs35l41.c b/sound/soc/codecs/cs35l41.c
index 12327b4c3d563..a31cb9ba7f7de 100644
--- a/sound/soc/codecs/cs35l41.c
+++ b/sound/soc/codecs/cs35l41.c
@@ -386,10 +386,18 @@ 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,
--
2.42.0
