Unverified Commit a1d14d83 authored by Chen Ni's avatar Chen Ni Committed by Mark Brown
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ASoC: codecs: max98390: Check return value of devm_gpiod_get_optional() in max98390_i2c_probe() 



The devm_gpiod_get_optional() function may return an error pointer
(ERR_PTR) in case of a genuine failure during GPIO acquisition,
not just NULL which indicates the legitimate absence of an optional
GPIO.

Add an IS_ERR() check after the function call to catch such errors and
propagate them to the probe function, ensuring the driver fails to load
safely rather than proceeding with an invalid pointer.

Signed-off-by: default avatarChen Ni <nichen@iscas.ac.cn>
Link: https://patch.msgid.link/20260130091904.3426149-1-nichen@iscas.ac.cn


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent bbb758a6

sound/soc/codecs/max98390.c

+3 −0
Original line number Diff line number Diff line
@@ -1067,6 +1067,9 @@ static int max98390_i2c_probe(struct i2c_client *i2c) 


	reset_gpio = devm_gpiod_get_optional(&i2c->dev,

					     "reset", GPIOD_OUT_HIGH);

	if (IS_ERR(reset_gpio))

		return dev_err_probe(&i2c->dev, PTR_ERR(reset_gpio),

				     "Failed to get reset gpio\n");



	/* Power on device */

	if (reset_gpio) {