[2.6 patch] char/cs5535_gpio.c: don't use 0 as NULL pointer

[Adrian Bunk]

Don't use 0 as NULL pointer.

Spotted by sparse.

Signed-off-by: Adrian Bunk <bunk@xxxxxxxxxx>

---
222d75d575dcc142dedce63ffc5d7addc5567ec9 diff --git a/drivers/char/cs5535_gpio.c b/drivers/char/cs5535_gpio.c
index c2d23ca..c0a4a0b 100644
--- a/drivers/char/cs5535_gpio.c
+++ b/drivers/char/cs5535_gpio.c
@@ -215,7 +215,7 @@ static int __init cs5535_gpio_init(void)
 	else
 		mask = 0x0b003c66;
 
-	if (request_region(gpio_base, CS5535_GPIO_SIZE, NAME) == 0) {
+	if (!request_region(gpio_base, CS5535_GPIO_SIZE, NAME)) {
 		printk(KERN_ERR NAME ": can't allocate I/O for GPIO\n");
 		return -ENODEV;
 	}

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