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authorIgor Grinberg <grinberg@compulab.co.il>2013-11-08 01:03:51 +0200
committerTom Rini <trini@ti.com>2013-11-25 10:41:52 -0500
commit6516f81b64c71ab2be61f304d0e13dd84f730484 (patch)
tree03460a528001726d6c5badc36622b6adf168db19 /drivers/misc
parent1df7bbba24b5f8f97331e30066358b7ab97ff1df (diff)
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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>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/gpio_led.c6
1 files changed, 5 insertions, 1 deletions
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);
}