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leds: leds-gpio: Fix legacy GPIO number case

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In the legacy case, led_dat->gpiod is initialized correctly, but
overwritten later by template->gpiod, which is NULL, causing leds-gpio
to fail with:

    gpiod_direction_output: invalid GPIO
    leds-gpio: probe of leds-gpio failed with error -22

Move the initialization of led_dat->gpiod from template->gpiod up, and
always use led_dat->gpiod later, to fix this.

Fixes: 5c51277a9a (leds: leds-gpio: Add support for GPIO descriptors)
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Geert Uytterhoeven 2014-11-06 12:23:23 +01:00 committed by Rafael J. Wysocki
parent 60ba032ed7
commit ec98a4975e
1 changed files with 3 additions and 3 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

6
drivers/leds/leds-gpio.c
View file

@ -92,7 +92,8 @@ static int create_gpio_led(const struct gpio_led *template,
{
int ret, state;
if (!template->gpiod) {
led_dat->gpiod = template->gpiod;
if (!led_dat->gpiod) {
/*
* This is the legacy code path for platform code that
* still uses GPIO numbers. Ultimately we would like to get
@ -122,8 +123,7 @@ static int create_gpio_led(const struct gpio_led *template,
led_dat->cdev.name = template->name;
led_dat->cdev.default_trigger = template->default_trigger;
led_dat->gpiod = template->gpiod;
led_dat->can_sleep = gpiod_cansleep(template->gpiod);
led_dat->can_sleep = gpiod_cansleep(led_dat->gpiod);
led_dat->blinking = 0;
if (blink_set) {
led_dat->platform_gpio_blink_set = blink_set;