[PATCH 6.18 171/309] ASoC: adau1372: Fix unchecked clk_prepare_enable() return value

Greg Kroah-Hartman
2026-03-31T17:05:27Z

From: Jihed Chaibi <jihed.chaibi.dev@gmail.com>

[ Upstream commit 326fe8104a4020d30080d37ac8b6b43893cdebca ]

adau1372_set_power() calls clk_prepare_enable() but discards the return
value. If the clock enable fails, the driver proceeds to access registers
on unpowered hardware, potentially causing silent corruption.

Make adau1372_set_power() return int and propagate the error from
clk_prepare_enable(). Update adau1372_set_bias_level() to return the
error directly for the STANDBY and OFF cases.

Signed-off-by: Jihed Chaibi <jihed.chaibi.dev@gmail.com>
Fixes: 6cd4c6459e47 ("ASoC: Add ADAU1372 audio CODEC support")
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://patch.msgid.link/20260325210704.76847-2-jihed.chaibi.dev@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/codecs/adau1372.c | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/sound/soc/codecs/adau1372.c b/sound/soc/codecs/adau1372.c
index fdee689cae538..6345342218d61 100644
--- a/sound/soc/codecs/adau1372.c
+++ b/sound/soc/codecs/adau1372.c
@@ -782,15 +782,18 @@ static void adau1372_enable_pll(struct adau1372 *adau1372)
dev_err(adau1372->dev, "Failed to lock PLL\n");
}

-static void adau1372_set_power(struct adau1372 *adau1372, bool enable)
+static int adau1372_set_power(struct adau1372 *adau1372, bool enable)
{
if (adau1372->enabled == enable)
- return;
+ return 0;

if (enable) {
unsigned int clk_ctrl = ADAU1372_CLK_CTRL_MCLK_EN;
+ int ret;

- clk_prepare_enable(adau1372->mclk);
+ ret = clk_prepare_enable(adau1372->mclk);
+ if (ret)
+ return ret;
if (adau1372->pd_gpio)
gpiod_set_value(adau1372->pd_gpio, 0);

@@ -829,6 +832,8 @@ static void adau1372_set_power(struct adau1372 *adau1372, bool enable)
}

adau1372->enabled = enable;
+
+ return 0;
}

static int adau1372_set_bias_level(struct snd_soc_component *component,
@@ -842,11 +847,9 @@ static int adau1372_set_bias_level(struct snd_soc_component *component,
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
- adau1372_set_power(adau1372, true);
- break;
+ return adau1372_set_power(adau1372, true);
case SND_SOC_BIAS_OFF:
- adau1372_set_power(adau1372, false);
- break;
+ return adau1372_set_power(adau1372, false);
}

return 0;
--
2.53.0