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Message-ID: <20230907171010.1447274-6-cristian.ciocaltea@collabora.com>
Date: Thu, 7 Sep 2023 20:10:04 +0300
From: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To: James Schulman <james.schulman@...rus.com>,
David Rhodes <david.rhodes@...rus.com>,
Richard Fitzgerald <rf@...nsource.cirrus.com>,
Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Stefan Binding <sbinding@...nsource.cirrus.com>,
Charles Keepax <ckeepax@...nsource.cirrus.com>,
Vitaly Rodionov <vitalyr@...nsource.cirrus.com>
Cc: alsa-devel@...a-project.org, patches@...nsource.cirrus.com,
linux-kernel@...r.kernel.org, kernel@...labora.com
Subject: [PATCH v2 05/11] ASoC: cs35l41: Verify PM runtime resume errors in IRQ handler
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@...labora.com>
Acked-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
---
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 12327b4c3d56..a31cb9ba7f7d 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,
--
2.41.0
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