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Commit 90c9d4f8 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds 

* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds:
  leds: Remove incorrect use of preempt_count() from leds-gpio
  leds: Fix potential leds-gpio oops
parents 33442039 306dd85c

drivers/leds/leds-gpio.c

+10 −10
Original line number Diff line number Diff line
@@ -49,13 +49,13 @@ static void gpio_led_set(struct led_classdev *led_cdev, 
	if (led_dat->active_low)

		level = !level;



	/* setting GPIOs with I2C/etc requires a preemptible task context */

	/* Setting GPIOs with I2C/etc requires a task context, and we don't

	 * seem to have a reliable way to know if we're already in one; so

	 * let's just assume the worst.

	 */

	if (led_dat->can_sleep) {

		if (preempt_count()) {

		led_dat->new_level = level;

		schedule_work(&led_dat->work);

		} else

			gpio_set_value_cansleep(led_dat->gpio, level);

	} else

		gpio_set_value(led_dat->gpio, level);

}
@@ -79,6 +79,10 @@ static int gpio_led_probe(struct platform_device *pdev) 
		cur_led = &pdata->leds[i];

		led_dat = &leds_data[i];



		ret = gpio_request(cur_led->gpio, cur_led->name);

		if (ret < 0)

			goto err;



		led_dat->cdev.name = cur_led->name;

		led_dat->cdev.default_trigger = cur_led->default_trigger;

		led_dat->gpio = cur_led->gpio;
@@ -87,10 +91,6 @@ static int gpio_led_probe(struct platform_device *pdev) 
		led_dat->cdev.brightness_set = gpio_led_set;

		led_dat->cdev.brightness = LED_OFF;



		ret = gpio_request(led_dat->gpio, led_dat->cdev.name);

		if (ret < 0)

			goto err;



		gpio_direction_output(led_dat->gpio, led_dat->active_low);



		INIT_WORK(&led_dat->work, gpio_led_work);