[PATCH] gpio: ep93xx: fix test for end of loop

[Dan Carpenter]

The problem is that if port == ARRAY_SIZE() and "gc == &epg->gc[port]"
then that should be treated as invalid.

Fixes: fd935fc421e7 ("gpio: ep93xx: Do not pingpong irq numbers")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/gpio/gpio-ep93xx.c b/drivers/gpio/gpio-ep93xx.c
index 68a416fc3141..b0699f57ddf5 100644
--- a/drivers/gpio/gpio-ep93xx.c
+++ b/drivers/gpio/gpio-ep93xx.c
@@ -80,7 +80,7 @@ static int ep93xx_gpio_port(struct gpio_chip *gc)
                port++;
 
        /* This should not happen but is there as a last safeguard */
-       if (gc != &epg->gc[port]) {
+       if (port == ARRAY_SIZE(epg->gc)) {
                pr_crit("can't find the GPIO port\n");
                return 0;
        }