ASoC: cs4271: Fix regulator leak on probe failure

[ Upstream commit 6b6eddc63ce871897d3a5bc4f8f593e698aef104 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/soc/codecs/cs4271.c b/sound/soc/codecs/cs4271.c
index 04b86a51e055460d90cad00e69065ec2dc9a76af..1df484ff34a0d4b225904829b742075fa9b08312 100644 (file)
--- a/sound/soc/codecs/cs4271.c
+++ b/sound/soc/codecs/cs4271.c
@@ -594,17 +594,17 @@ 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);
 
@@ -614,6 +614,10 @@ 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)