From 6516f81b64c71ab2be61f304d0e13dd84f730484 Mon Sep 17 00:00:00 2001 From: Igor Grinberg Date: Fri, 8 Nov 2013 01:03:51 +0200 Subject: 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 Tested-by: Ilya Ledvich --- drivers/misc/gpio_led.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/misc/gpio_led.c b/drivers/misc/gpio_led.c index 3fedddc..de20419 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); } -- cgit v1.1