gpio: clean up gpiochip_remove

Clean up gpiochip_remove somewhat and only output warning about removing
chip with GPIOs requested once.

Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 59eaa23..5a5c208 100644 (file)
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -325,8 +325,10 @@ static void gpiochip_free_hogs(struct gpio_chip *chip);
  */
 void gpiochip_remove(struct gpio_chip *chip)
 {
+       struct gpio_desc *desc;
        unsigned long   flags;
        unsigned        id;
+       bool            requested = false;
 
        gpiochip_unexport(chip);
 
@@ -339,15 +341,17 @@ void gpiochip_remove(struct gpio_chip *chip)
 
        spin_lock_irqsave(&gpio_lock, flags);
        for (id = 0; id < chip->ngpio; id++) {
-               if (test_bit(FLAG_REQUESTED, &chip->desc[id].flags))
-                       dev_crit(chip->dev, "REMOVING GPIOCHIP WITH GPIOS STILL REQUESTED\n");
+               desc = &chip->desc[id];
+               desc->chip = NULL;
+               if (test_bit(FLAG_REQUESTED, &desc->flags))
+                       requested = true;
        }
-       for (id = 0; id < chip->ngpio; id++)
-               chip->desc[id].chip = NULL;
-
        list_del(&chip->list);
        spin_unlock_irqrestore(&gpio_lock, flags);
 
+       if (requested)
+               dev_crit(chip->dev, "REMOVING GPIOCHIP WITH GPIOS STILL REQUESTED\n");
+
        kfree(chip->desc);
        chip->desc = NULL;
 }