leds-gpio: fix possible crash on OF device unbinding
If there are leds present in the OF tree, but the GPIOs for (some) of
them are unavailable, led_data doesn't get populated with correct
devices. Then, on device unbinding, one can crash the kernel.
Workaround this by setting led->gpio to invalid value early.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 7467980..e5225d2 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -78,6 +78,8 @@
{
int ret, state;
+ led_dat->gpio = -1;
+
/* skip leds that aren't available */
if (!gpio_is_valid(template->gpio)) {
printk(KERN_INFO "Skipping unavailable LED gpio %d (%s)\n",