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pinctrl: apple: handle regmap_read errors

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Explicitly return 0 if the regmap_read fails.
Also change a uint32_t to a u32.

Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20211121165642.27883-6-joey.gouly@arm.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Joey Gouly 2021-11-21 16:56:36 +00:00 committed by Linus Walleij
parent 7c06f080dd
commit 3605f10411
1 changed files with 7 additions and 3 deletions
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10
drivers/pinctrl/pinctrl-apple-gpio.c
View file

@ -81,12 +81,16 @@ static void apple_gpio_set_reg(struct apple_gpio_pinctrl *pctl,
regmap_update_bits(pctl->map, REG_GPIO(pin), mask, value);
}
static uint32_t apple_gpio_get_reg(struct apple_gpio_pinctrl *pctl,
static u32 apple_gpio_get_reg(struct apple_gpio_pinctrl *pctl,
unsigned int pin)
{
unsigned int val = 0;
int ret;
u32 val;
ret = regmap_read(pctl->map, REG_GPIO(pin), &val);
if (ret)
return 0;
regmap_read(pctl->map, REG_GPIO(pin), &val);
return val;
}