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ASoC: cs4271: Fix regulator leak on probe failure

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The probe function enables regulators at the beginning
but fails to disable them in its error handling path.
If any operation after enabling the regulators fails,
the probe will exit with an error, leaving the regulators
permanently enabled, which could lead to a resource leak.

Add a proper error handling path to call regulator_bulk_disable()
before returning an error.

Fixes: 9a397f473657 ("ASoC: cs4271: add regulator consumer support")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20251105062246.1955-1-vulab@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Haotian Zhang 2025-11-05 14:22:46 +08:00 committed by Mark Brown
parent 249d96b492
commit 6b6eddc63c
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 7 additions and 3 deletions
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10
sound/soc/codecs/cs4271.c
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@ -581,17 +581,17 @@ static int cs4271_component_probe(struct snd_soc_component *component)
ret = regcache_sync(cs4271->regmap);
if (ret < 0)
return ret;
goto err_disable_regulator;
ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2,
CS4271_MODE2_PDN | CS4271_MODE2_CPEN,
CS4271_MODE2_PDN | CS4271_MODE2_CPEN);
if (ret < 0)
return ret;
goto err_disable_regulator;
ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2,
CS4271_MODE2_PDN, 0);
if (ret < 0)
return ret;
goto err_disable_regulator;
/* Power-up sequence requires 85 uS */
udelay(85);
@ -601,6 +601,10 @@ static int cs4271_component_probe(struct snd_soc_component *component)
CS4271_MODE2_MUTECAEQUB);
return 0;
err_disable_regulator:
regulator_bulk_disable(ARRAY_SIZE(cs4271->supplies), cs4271->supplies);
return ret;
}
static void cs4271_component_remove(struct snd_soc_component *component)