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gpio_led: check gpio_request() return value

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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>
This commit is contained in:
Igor Grinberg
2013-11-08 01:03:51 +02:00
committed by Tom Rini
parent 1df7bbba24
commit 6516f81b64
1 changed files with 5 additions and 1 deletions
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6
drivers/misc/gpio_led.c
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@@ -11,7 +11,11 @@
void __led_init(led_id_t mask, int state) 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); gpio_direction_output(mask, state == STATUS_LED_ON);
} }