This driver doesn't use sleeping operations in .brightness_set
method, and can be marked with LED_BRIGHTNESS_FAST flag.
That flag allows changing brightness at high rates (over 100Hz).

CC: Bryan Wu <coolo...@gmail.com>
CC: Richard Purdie <rpur...@rpsys.net>
CC: Jacek Anaszewski <j.anaszew...@samsung.com>
CC: linux-l...@vger.kernel.org
CC: linux-kernel@vger.kernel.org

Signed-off-by: Stas Sergeev <s...@users.sourceforge.net>
---
 drivers/leds/dell-led.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/leds/dell-led.c b/drivers/leds/dell-led.c
index c36acaf..159231b 100644
--- a/drivers/leds/dell-led.c
+++ b/drivers/leds/dell-led.c
@@ -320,7 +320,7 @@ static struct led_classdev dell_led = {
        .max_brightness = 1,
        .brightness_set = dell_led_set,
        .blink_set      = dell_led_blink,
-       .flags          = LED_CORE_SUSPENDRESUME,
+       .flags          = LED_CORE_SUSPENDRESUME | LED_BRIGHTNESS_FAST,
 };

 static int __init dell_led_init(void)
-- 
1.7.9.5
--
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