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asoc: codecs: Add nullptr check

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fix for nullptr deref issue

Change-Id: I26acf2c5c696038c6d5c64d858174b2f2c58a7d3
Signed-off-by: Shazmaan Ali <quic_shazmaan@quicinc.com>
This commit is contained in:
Shazmaan Ali 2022-03-25 13:51:35 -07:00 • committed by Gerrit - the friendly Code Review server
commit 4de0f17990
1 changed files with 8 additions and 5 deletions
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13
soc/pinctrl-lpi.c
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@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#include <linux/gpio.h>
@ -265,12 +266,14 @@ static int lpi_gpio_set_mux(struct pinctrl_dev *pctldev, unsigned int function,
pad = pctldev->desc->pins[pin].drv_data;
pad->function = function;
if (pad != NULL) {
pad->function = function;
val = lpi_gpio_read(pad, LPI_GPIO_REG_VAL_CTL);
val &= ~(LPI_GPIO_REG_FUNCTION_MASK);
val |= pad->function << LPI_GPIO_REG_FUNCTION_SHIFT;
lpi_gpio_write(pad, LPI_GPIO_REG_VAL_CTL, val);
val = lpi_gpio_read(pad, LPI_GPIO_REG_VAL_CTL);
val &= ~(LPI_GPIO_REG_FUNCTION_MASK);
val |= pad->function << LPI_GPIO_REG_FUNCTION_SHIFT;
lpi_gpio_write(pad, LPI_GPIO_REG_VAL_CTL, val);
}
return 0;
}