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authorDavid Brownell <dbrownell@users.sourceforge.net>2009-03-05 16:46:44 -0800
committerRichard Purdie <rpurdie@linux.intel.com>2009-04-06 16:06:27 +0100
commitd379ee8acd0719736ee7f1d1ccc3b5765880eaf8 (patch)
treef998ab138b72c5bd597b45ea28c04a3f92586f28
parent7fbc3a9b132e93b2ba1fd889c1ad8a4135731cc3 (diff)
leds: just ignore invalid GPIOs in leds-gpio
Sometimes it's awkward to make sure that the array in the platform_data handed to the leds-gpio driver has only valid data ... some leds may not be always available, and coping with that currently requires patching or rebuilding the array. This patch fixes that by making it be OK to pass an invalid GPIO (such as "-EINVAL") ... such table entries are skipped. [rpurdie@linux.intel.com: adjusted to apply against other led tree changes] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Tested-by: Diego Dompe <diego.dompe@ridgerun.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
-rw-r--r--drivers/leds/leds-gpio.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 8fa352ac20f8..102ef4a14c5f 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -78,6 +78,13 @@ static int __devinit create_gpio_led(const struct gpio_led *template,
{
int ret;
+ /* skip leds that aren't available */
+ if (!gpio_is_valid(template->gpio)) {
+ printk(KERN_INFO "Skipping unavilable LED gpio %d (%s)\n",
+ template->gpio, template->name);
+ return;
+ }
+
ret = gpio_request(template->gpio, template->name);
if (ret < 0)
return ret;
@@ -114,6 +121,8 @@ err:
static void delete_gpio_led(struct gpio_led_data *led)
{
+ if (!gpio_is_valid(led->gpio))
+ return;
led_classdev_unregister(&led->cdev);
cancel_work_sync(&led->work);
gpio_free(led->gpio);