gpio: pca953x: Use ARRAY_SIZE instead of reinventing it

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>

diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
index be13745..7371cd4 100644 (file)
--- a/drivers/gpio/pca953x.c
+++ b/drivers/gpio/pca953x.c
@@ -47,9 +47,6 @@ struct pca953x_chip_ngpio {
 static struct pca953x_chip_ngpio pca953x_chip_ngpios[] =
     CONFIG_SYS_I2C_PCA953X_WIDTH;
 
-#define NUM_CHIP_GPIOS (sizeof(pca953x_chip_ngpios) / \
-                       sizeof(struct pca953x_chip_ngpio))
-
 /*
  * Determine the number of GPIO pins supported. If we don't know we assume
  * 8 pins.
@@ -58,7 +55,7 @@ static int pca953x_ngpio(uint8_t chip)
 {
        int i;
 
-       for (i = 0; i < NUM_CHIP_GPIOS; i++)
+       for (i = 0; i < ARRAY_SIZE(pca953x_chip_ngpios); i++)
                if (pca953x_chip_ngpios[i].chip == chip)
                        return pca953x_chip_ngpios[i].ngpio;