diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index bcfdd5a0dd..5bc261a010 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -172,6 +172,16 @@ int gpio_request(unsigned gpio, const char *label) return gpiodesc_request(desc, label); } +bool gpio_slice_acquired(unsigned gpio) +{ + struct gpio_desc *desc = gpio_to_desc(gpio); + + if (!desc) + return false; + + return slice_acquired(&desc->chip->slice); +} + static void gpiodesc_free(struct gpio_desc *desc) { if (!desc->requested) @@ -1013,6 +1023,7 @@ int gpiochip_add(struct gpio_chip *chip) return -ENOSPC; } + slice_init(&chip->slice, dev_name(chip->dev)); list_add_tail(&chip->list, &chip_list); |