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ASoC: cs35l33: Minor error paths fixups
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Correct some unchecked re-allocations of ret whilst reading the device
ID and ensure the hardware state is returned to off on the error
paths.

Reported-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210510131357.17170-4-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Charles Keepax authored and Mark Brown committed May 10, 2021
1 parent 283160f commit 77908db
Showing 1 changed file with 9 additions and 6 deletions.
15 changes: 9 additions & 6 deletions sound/soc/codecs/cs35l33.c
Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@
#include <linux/of_irq.h>

#include "cs35l33.h"
#include "cirrus_legacy.h"

#define CS35L33_BOOT_DELAY 50

Expand Down Expand Up @@ -1190,12 +1191,12 @@ static int cs35l33_i2c_probe(struct i2c_client *i2c_client,
regcache_cache_only(cs35l33->regmap, false);

/* initialize codec */
ret = regmap_read(cs35l33->regmap, CS35L33_DEVID_AB, &reg);
devid = (reg & 0xFF) << 12;
ret = regmap_read(cs35l33->regmap, CS35L33_DEVID_CD, &reg);
devid |= (reg & 0xFF) << 4;
ret = regmap_read(cs35l33->regmap, CS35L33_DEVID_E, &reg);
devid |= (reg & 0xF0) >> 4;
devid = cirrus_read_device_id(cs35l33->regmap, CS35L33_DEVID_AB);
if (devid < 0) {
ret = devid;
dev_err(&i2c_client->dev, "Failed to read device ID: %d\n", ret);
goto err_enable;
}

if (devid != CS35L33_CHIP_ID) {
dev_err(&i2c_client->dev,
Expand Down Expand Up @@ -1242,6 +1243,8 @@ static int cs35l33_i2c_probe(struct i2c_client *i2c_client,
return 0;

err_enable:
gpiod_set_value_cansleep(cs35l33->reset_gpio, 0);

regulator_bulk_disable(cs35l33->num_core_supplies,
cs35l33->core_supplies);

Expand Down

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