gpio: remove unnecessary checks from gpiod_to_chip()

We don't need to check the gdev pointer in struct gpio_desc - it's
always assigned and never cleared. It's also pointless to check
gdev->chip before we actually serialize access to it.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 5db3ed29dae68bd7ea74c4d6b596a5e0222a0bf5..76c27ba9ee6410644d679414d0f82bb4849b624b 100644 (file)
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -214,7 +214,7 @@ EXPORT_SYMBOL_GPL(desc_to_gpio);
  */
 struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc)
 {
-       if (!desc || !desc->gdev)
+       if (!desc)
                return NULL;
        return desc->gdev->chip;
 }
@@ -3505,7 +3505,7 @@ int gpiod_to_irq(const struct gpio_desc *desc)
         * requires this function to not return zero on an invalid descriptor
         * but rather a negative error number.
         */
-       if (!desc || IS_ERR(desc) || !desc->gdev || !desc->gdev->chip)
+       if (!desc || IS_ERR(desc))
                return -EINVAL;
 
        gc = desc->gdev->chip;