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[2/2] ASoC: codecs: wsa883x: handle timeouts in resume path

Message ID 20220630130023.9308-2-srinivas.kandagatla@linaro.org
State Accepted
Commit 0df73e1a9f7b1152ace21b6406138f7487239128
Headers show
Series [1/2] ASoC: codecs: wsa881x: handle timeouts in resume path | expand

Commit Message

Srinivas Kandagatla June 30, 2022, 1 p.m. UTC 
Currently we do not check if SoundWire slave initialization timeout
expired before continuing to access its registers.

Its possible that the registers are not accessible if timeout is
expired. Handle this by returning timeout in resume path.

Reported-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Fixes: 43b8c7dc85a1 ("ASoC: codecs: add wsa883x amplifier support")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 sound/soc/codecs/wsa883x.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/sound/soc/codecs/wsa883x.c b/sound/soc/codecs/wsa883x.c
index e8f519e89213..40c7d64a9c41 100644
--- a/sound/soc/codecs/wsa883x.c
+++ b/sound/soc/codecs/wsa883x.c
@@ -1455,6 +1455,7 @@  static int __maybe_unused wsa883x_runtime_resume(struct device *dev)
 	struct sdw_slave *slave = dev_to_sdw_dev(dev);
 	struct regmap *regmap = dev_get_regmap(dev, NULL);
 	struct wsa883x_priv *wsa883x = dev_get_drvdata(dev);
+	unsigned long time;
 	int ret;
 
 	ret = regulator_enable(wsa883x->vdd);
@@ -1465,8 +1466,14 @@  static int __maybe_unused wsa883x_runtime_resume(struct device *dev)
 
 	gpiod_direction_output(wsa883x->sd_n, 1);
 
-	wait_for_completion_timeout(&slave->initialization_complete,
-				    msecs_to_jiffies(WSA883X_PROBE_TIMEOUT));
+	time = wait_for_completion_timeout(&slave->initialization_complete,
+					   msecs_to_jiffies(WSA883X_PROBE_TIMEOUT));
+	if (!time) {
+		dev_err(dev, "Initialization not complete, timed out\n");
+		gpiod_direction_output(wsa883x->sd_n, 0);
+		regulator_disable(wsa883x->vdd);
+		return -ETIMEDOUT;
+	}
 
 	usleep_range(20000, 20010);
 	regcache_cache_only(regmap, false);