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| author | Jihed Chaibi <jihed.chaibi.dev@gmail.com> | 2026-03-25 22:07:03 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-04-02 13:07:23 +0200 |
| commit | 94577b2e936f01a420a27fc97bef0105d65560ee (patch) | |
| tree | bda7c5305029dd578a66fbd74c2a0c89ebddf9ab /sound | |
| parent | 227b7e14ae4084639a6a61c052cd061a67326851 (diff) | |
| download | linux-94577b2e936f01a420a27fc97bef0105d65560ee.tar.gz linux-94577b2e936f01a420a27fc97bef0105d65560ee.tar.bz2 linux-94577b2e936f01a420a27fc97bef0105d65560ee.zip | |
ASoC: adau1372: Fix unchecked clk_prepare_enable() return value
[ 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>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/adau1372.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/sound/soc/codecs/adau1372.c b/sound/soc/codecs/adau1372.c index 98380a7ce64d..f629be6c297d 100644 --- a/sound/soc/codecs/adau1372.c +++ b/sound/soc/codecs/adau1372.c @@ -781,15 +781,18 @@ 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); @@ -828,6 +831,8 @@ 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, @@ -841,11 +846,9 @@ 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; |