linux-kernel - [PATCH 1/3] backlight: da9052: Use usleep_range() instead of msleep() for small sleeps

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Date:	Mon, 06 Aug 2012 13:43:53 +0900
From:	Jingoo Han <jg1.han@...sung.com>
To:	'Andrew Morton' <akpm@...ux-foundation.org>,
	'LKML' <linux-kernel@...r.kernel.org>
Cc:	'Richard Purdie' <rpurdie@...ys.net>,
	'Ashish Jangam' <ashish.jangam@...tcummins.com>,
	'Jingoo Han' <jg1.han@...sung.com>
Subject: [PATCH 1/3] backlight: da9052: 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.

Cc: Ashish Jangam <ashish.jangam@...tcummins.com>
Cc: Richard Purdie <rpurdie@...ys.net>
Signed-off-by: Jingoo Han <jg1.han@...sung.com>
---
 drivers/video/backlight/da9052_bl.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/video/backlight/da9052_bl.c b/drivers/video/backlight/da9052_bl.c
index b628d68..10485c9 100644
--- a/drivers/video/backlight/da9052_bl.c
+++ b/drivers/video/backlight/da9052_bl.c
@@ -72,7 +72,7 @@ static int da9052_adjust_wled_brightness(struct da9052_bl *wleds)
 	if (ret < 0)
 		return ret;
 
-	msleep(10);
+	usleep_range(10000, 11000);
 
 	if (wleds->brightness) {
 		ret = da9052_reg_write(wleds->da9052, wled_bank[wleds->led_reg],
-- 
1.7.1


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