From: Jingoo Han <jg1.han@samsung.com>
To: "'Andrew Morton'" <akpm@linux-foundation.org>,
"'LKML'" <linux-kernel@vger.kernel.org>
Cc: "'Richard Purdie'" <rpurdie@rpsys.net>,
"'Claudio Nieder'" <private@claudio.ch>,
"'Jingoo Han'" <jg1.han@samsung.com>
Subject: [PATCH 3/3] backlight: kb3886: Use usleep_range() instead of msleep() for small sleeps
Date: Mon, 06 Aug 2012 13:45:34 +0900 [thread overview]
Message-ID: <002e01cd738e$50fcfdc0$f2f6f940$%han@samsung.com> (raw)
Since msleep might not sleep for the desired amount when less
than 20ms, use usleep_range.
Cc: Claudio Nieder <private@claudio.ch>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
drivers/video/backlight/kb3886_bl.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/video/backlight/kb3886_bl.c b/drivers/video/backlight/kb3886_bl.c
index 72dd555..6c5ed6b 100644
--- a/drivers/video/backlight/kb3886_bl.c
+++ b/drivers/video/backlight/kb3886_bl.c
@@ -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);
}
--
1.7.1
reply other threads:[~2012-08-06 4:45 UTC|newest]
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