summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2008-04-01 11:24:20 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-01 11:24:20 -0700
commit90c9d4f8eeb9dd31adfb97e897039033b7a72d14 (patch)
tree9cb4e0d0eee8a67dc4353ad93e6e07a54bd2ffaa
parent3344203948f40521c35a0a52e3f1bd9fbb7a1118 (diff)
parent306dd85c1d41e20a07d1e821e27f5df4927bb5e7 (diff)
downloadlinux-sh-90c9d4f8eeb9dd31adfb97e897039033b7a72d14.tar.gz
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
-rw-r--r--drivers/leds/leds-gpio.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 6c0a9c4761ee..4c0b05852cb6 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -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);
+ led_dat->new_level = level;
+ schedule_work(&led_dat->work);
} 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);