diff options
| author | Axel Lin <axel.lin@ingics.com> | 2016-02-29 16:08:19 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-03-09 05:17:55 +0300 |
| commit | 3fab91ea284a3b795327dda915a3c150a49e4be2 (patch) | |
| tree | b14a447bd32e444aa848d364defcff8ec5bdf730 /drivers/gpio/gpio-lp3943.c | |
| parent | fa283db76f681b9e17af2c329817042134178e7f (diff) | |
| download | linux-3fab91ea284a3b795327dda915a3c150a49e4be2.tar.xz | |
gpio: lp3943: Drop pin_used and lp3943_gpio_request/lp3943_gpio_free
The implementation of lp3943_gpio_request/lp3943_gpio_free test pin_used
for tracing the pin usage. However, gpiolib already checks FLAG_REQUESTED
flag for the same purpose. So remove the redundant implementation.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-lp3943.c')
| -rw-r--r-- | drivers/gpio/gpio-lp3943.c | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/drivers/gpio/gpio-lp3943.c b/drivers/gpio/gpio-lp3943.c index 6dc6725403ec..fdec94b0cfb0 100644 --- a/drivers/gpio/gpio-lp3943.c +++ b/drivers/gpio/gpio-lp3943.c @@ -45,26 +45,6 @@ struct lp3943_gpio { u16 input_mask; /* 1 = GPIO is input direction, 0 = output */ }; -static int lp3943_gpio_request(struct gpio_chip *chip, unsigned offset) -{ - struct lp3943_gpio *lp3943_gpio = gpiochip_get_data(chip); - struct lp3943 *lp3943 = lp3943_gpio->lp3943; - - /* Return an error if the pin is already assigned */ - if (test_and_set_bit(offset, &lp3943->pin_used)) - return -EBUSY; - - return 0; -} - -static void lp3943_gpio_free(struct gpio_chip *chip, unsigned offset) -{ - struct lp3943_gpio *lp3943_gpio = gpiochip_get_data(chip); - struct lp3943 *lp3943 = lp3943_gpio->lp3943; - - clear_bit(offset, &lp3943->pin_used); -} - static int lp3943_gpio_set_mode(struct lp3943_gpio *lp3943_gpio, u8 offset, u8 val) { @@ -177,8 +157,6 @@ static int lp3943_gpio_direction_output(struct gpio_chip *chip, unsigned offset, static const struct gpio_chip lp3943_gpio_chip = { .label = "lp3943", .owner = THIS_MODULE, - .request = lp3943_gpio_request, - .free = lp3943_gpio_free, .direction_input = lp3943_gpio_direction_input, .get = lp3943_gpio_get, .direction_output = lp3943_gpio_direction_output, |