gpio: pca953x: Use bitmap API over implicit GCC extension

In IRQ handler we have to clear bitmap before use. Currently
the GCC extension has been used for that. For sake of the consistency
switch to bitmap API. As expected bloat-o-meter shows no difference
in the object size.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Link: https://lore.kernel.org/r/20200930142013.59247-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 29342e5def82bd74455a903f494d207fddca8c48..7f64e69485747aba8f7bbee80011d945f0d4dad2 100644 (file)
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -814,10 +814,12 @@ static irqreturn_t pca953x_irq_handler(int irq, void *devid)
 {
        struct pca953x_chip *chip = devid;
        struct gpio_chip *gc = &chip->gpio_chip;
-       DECLARE_BITMAP(pending, MAX_LINE) = {};
+       DECLARE_BITMAP(pending, MAX_LINE);
        int level;
        bool ret;
 
+       bitmap_zero(pending, MAX_LINE);
+
        mutex_lock(&chip->i2c_lock);
        ret = pca953x_irq_pending(chip, pending);
        mutex_unlock(&chip->i2c_lock);