diff options
Diffstat (limited to 'drivers/pinctrl/sh-pfc/gpio.c')
| -rw-r--r-- | drivers/pinctrl/sh-pfc/gpio.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/drivers/pinctrl/sh-pfc/gpio.c b/drivers/pinctrl/sh-pfc/gpio.c index 3ad938fd7ecc..db9af4e548a0 100644 --- a/drivers/pinctrl/sh-pfc/gpio.c +++ b/drivers/pinctrl/sh-pfc/gpio.c @@ -42,6 +42,11 @@ static struct sh_pfc *gpio_to_pfc(struct gpio_chip *gc) static int gpio_pin_request(struct gpio_chip *gc, unsigned offset) { + struct sh_pfc *pfc = gpio_to_pfc(gc); + + if (pfc->info->pins[offset].enum_id == 0) + return -EINVAL; + return pinctrl_request_gpio(offset); } @@ -52,12 +57,10 @@ static void gpio_pin_free(struct gpio_chip *gc, unsigned offset) static void gpio_pin_set_value(struct sh_pfc *pfc, unsigned offset, int value) { - struct pinmux_data_reg *dr = NULL; - int bit = 0; - - if (sh_pfc_get_data_reg(pfc, offset, &dr, &bit) != 0) - BUG(); + struct pinmux_data_reg *dr; + int bit; + sh_pfc_get_data_reg(pfc, offset, &dr, &bit); sh_pfc_write_bit(dr, bit, value); } @@ -77,12 +80,10 @@ static int gpio_pin_direction_output(struct gpio_chip *gc, unsigned offset, static int gpio_pin_get(struct gpio_chip *gc, unsigned offset) { struct sh_pfc *pfc = gpio_to_pfc(gc); - struct pinmux_data_reg *dr = NULL; - int bit = 0; - - if (sh_pfc_get_data_reg(pfc, offset, &dr, &bit) != 0) - return -EINVAL; + struct pinmux_data_reg *dr; + int bit; + sh_pfc_get_data_reg(pfc, offset, &dr, &bit); return sh_pfc_read_bit(dr, bit); } |