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drivers/video/backlight/kb3886_bl.c: use usleep_range() instead of msleep() for small sleeps 

Since msleep() might not sleep for the desired amount when less than 20ms,
use usleep_range().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Claudio Nieder <private@claudio.ch>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jingoo Han 2012-10-04 17:12:47 -07:00 committed by Linus Torvalds
parent a08e1a376b
commit 7c9332d19e
1 changed files with 2 additions and 2 deletions
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4
drivers/video/backlight/kb3886_bl.c
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@ -34,9 +34,9 @@ static void kb3886_bl_set_intensity(int intensity)
mutex_lock(&bl_mutex);
intensity = intensity&0xff;
outb(KB3886_ADC_DAC_PWM, KB3886_PARENT);
msleep(10);
usleep_range(10000, 11000);
outb(KB3886_PWM0_WRITE, KB3886_IO);
msleep(10);
usleep_range(10000, 11000);
outb(intensity, KB3886_IO);
mutex_unlock(&bl_mutex);
}