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| author | Heiner Kallweit <hkallweit1@gmail.com> | 2016-01-22 23:43:48 +0300 |
|---|---|---|
| committer | Jacek Anaszewski <j.anaszewski@samsung.com> | 2016-03-14 11:22:20 +0300 |
| commit | d84d80f38f0ff4eb4becf1a3569c8e7b2c463b61 (patch) | |
| tree | 6a856df3aff0c9611a666faca10079960a1480f2 /include/linux/leds.h | |
| parent | 70b2563b35b3edcf67819b99e560f3f0f6ce4a9f (diff) | |
| download | linux-d84d80f38f0ff4eb4becf1a3569c8e7b2c463b61.tar.xz | |
leds: core: avoid error message when a USB LED device is unplugged
When a USB LED device is unplugged the remove call chain calls
led_classdev_unregister which tries to switch the LED off.
As the device has been removed already this results in a ENODEV
error message in dmesg.
Avoid this error message by ignoring ENODEV in calls from
led_classdev_unregister if the LED device is flagged as pluggable.
Therefore a new flag LED_HW_PLUGGABLE was introduced which should be set by
all LED drivers handling pluggable LED devices (mainly USB LED devices).
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Diffstat (limited to 'include/linux/leds.h')
| -rw-r--r-- | include/linux/leds.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/leds.h b/include/linux/leds.h index e3470e732ede..f203a8f89d30 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -39,6 +39,7 @@ struct led_classdev { /* Lower 16 bits reflect status */ #define LED_SUSPENDED (1 << 0) +#define LED_UNREGISTERING (1 << 1) /* Upper 16 bits reflect control information */ #define LED_CORE_SUSPENDRESUME (1 << 16) #define LED_BLINK_ONESHOT (1 << 17) @@ -48,6 +49,7 @@ struct led_classdev { #define LED_BLINK_DISABLE (1 << 21) #define LED_SYSFS_DISABLE (1 << 22) #define LED_DEV_CAP_FLASH (1 << 23) +#define LED_HW_PLUGGABLE (1 << 24) /* Set LED brightness level * Must not sleep. Use brightness_set_blocking for drivers |