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gpio: pca953x: avoid to use uninitialized value pinctrl

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[ Upstream commit 90fee3dd5b ]

There is a variable pinctrl declared without initializer. And then
has the case (switch operation chose the default case) to directly
use this uninitialized value, this is not a safe behavior. So here
initialize the pinctrl as 0 to avoid this issue.
This is reported by Coverity.

Fixes: 13c5d4ce80 ("gpio: pca953x: Add support for PCAL6534")
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Haibo Chen 2022-12-11 00:05:58 +02:00 committed by Greg Kroah-Hartman
parent ee84d37a5f
commit 2892b358c8
1 changed files with 3 additions and 0 deletions
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3
drivers/gpio/gpio-pca953x.c
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@ -473,6 +473,9 @@ static u8 pcal6534_recalc_addr(struct pca953x_chip *chip, int reg, int off)
case PCAL6524_DEBOUNCE:
pinctrl = ((reg & PCAL_PINCTRL_MASK) >> 1) + 0x1c;
break;
default:
pinctrl = 0;
break;
}
return pinctrl + addr + (off / BANK_SZ);