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authorJosh Wu <josh.wu@atmel.com>2013-09-26 13:27:56 +0200
committerBryan Wu <cooloney@gmail.com>2013-10-25 19:12:55 +0200
commitb0bb83df0a004ff6ef9b1a11784361c9eb63dbf9 (patch)
tree1562001a1f0f5c289b4e841330731f9583d62982 /drivers/leds
parentof: introduce of_get_available_child_count (diff)
downloadlinux-b0bb83df0a004ff6ef9b1a11784361c9eb63dbf9.tar.xz
linux-b0bb83df0a004ff6ef9b1a11784361c9eb63dbf9.zip
leds-gpio: of: led should not be created if its status is disabled
now the leds-gpio driver will create every child led node without checking the status is disabled or not. for example, if we have a led node like d3, and its status is disabled: leds { d3 { label = "d3"; gpios = <&pioE 24 0>; status = "disabled"; }; }; we except the d3 should not be created. And the gpios should not be request as well. But current driver will create d3 and request its gpio. This patch fix this by using for_each_available_child_of_node() and of_get_available_child_count() to enumerate all child nodes. So the disabled node will be inavailable. Signed-off-by: Josh Wu <josh.wu@atmel.com> Signed-off-by: Bryan Wu <cooloney@gmail.com>
Diffstat (limited to 'drivers/leds')
-rw-r--r--drivers/leds/leds-gpio.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 7ccafdeab9c1..78b0e273a903 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -171,11 +171,11 @@ static struct gpio_leds_priv *gpio_leds_create_of(struct platform_device *pdev)
int count, ret;
/* count LEDs in this device, so we know how much to allocate */
- count = of_get_child_count(np);
+ count = of_get_available_child_count(np);
if (!count)
return ERR_PTR(-ENODEV);
- for_each_child_of_node(np, child)
+ for_each_available_child_of_node(np, child)
if (of_get_gpio(child, 0) == -EPROBE_DEFER)
return ERR_PTR(-EPROBE_DEFER);
@@ -184,7 +184,7 @@ static struct gpio_leds_priv *gpio_leds_create_of(struct platform_device *pdev)
if (!priv)
return ERR_PTR(-ENOMEM);
- for_each_child_of_node(np, child) {
+ for_each_available_child_of_node(np, child) {
struct gpio_led led = {};
enum of_gpio_flags flags;
const char *state;