On 11/08/13 01:03, Igor Grinberg wrote:
> 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 <grinb...@compulab.co.il>
Tested-by: Ilya Ledvich <i...@compulab.co.il>
> ---
> drivers/misc/gpio_led.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> 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);
> }
>
>
--
Regards,
Igor.
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