From: Igor Grinberg <grinberg@compulab.co.il>
Date: Thu, 7 Nov 2013 23:03:51 +0000 (+0200)
Subject: gpio_led: check gpio_request() return value
X-Git-Tag: v2014.01-rc1~23
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=6516f81b64c71ab2be61f304d0e13dd84f730484;p=u-boot

gpio_led: check gpio_request() return value

Add a check for the gpio_request() function return value and do not try
to configure the GPIO if the gpio_request() call fails.
Also, print an error message indicating the gpio_request() has failed.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Tested-by: Ilya Ledvich <ilya@compulab.co.il>
---

diff --git a/drivers/misc/gpio_led.c b/drivers/misc/gpio_led.c
index 3fedddc8b5..de2041956b 100644
--- a/drivers/misc/gpio_led.c
+++ b/drivers/misc/gpio_led.c
@@ -11,7 +11,11 @@
 
 void __led_init(led_id_t mask, int state)
 {
-	gpio_request(mask, "gpio_led");
+	if (gpio_request(mask, "gpio_led") != 0) {
+		printf("%s: failed requesting GPIO%lu!\n", __func__, mask);
+		return;
+	}
+
 	gpio_direction_output(mask, state == STATUS_LED_ON);
 }