linux-kernel - [PATCH 2/6] backlight: s6e63m0: use sleep instead of delay

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Message-id: <000a01cdde7b$f4530e80$dcf92b80$%han@samsung.com>
Date:	Thu, 20 Dec 2012 15:33:42 +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>,
	'Jingoo Han' <jg1.han@...sung.com>
Subject: [PATCH 2/6] backlight: s6e63m0: use sleep instead of delay

This patch replaces mdelay with msleep to remove the busy loop
waiting.

Signed-off-by: Jingoo Han <jg1.han@...sung.com>
---
 drivers/video/backlight/s6e63m0.c |   11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/video/backlight/s6e63m0.c b/drivers/video/backlight/s6e63m0.c
index cae140d..cff4515 100644
--- a/drivers/video/backlight/s6e63m0.c
+++ b/drivers/video/backlight/s6e63m0.c
@@ -406,8 +406,9 @@ static int s6e63m0_panel_send_sequence(struct s6e63m0 *lcd,
 			ret = s6e63m0_spi_write(lcd, wbuf[i], wbuf[i+1]);
 			if (ret)
 				break;
-		} else
-			udelay(wbuf[i+1]*1000);
+		} else {
+			msleep(wbuf[i+1]);
+		}
 		i += 2;
 	}
 
@@ -523,7 +524,7 @@ static int s6e63m0_power_on(struct s6e63m0 *lcd)
 		return -EFAULT;
 	} else {
 		pd->power_on(lcd->ld, 1);
-		mdelay(pd->power_on_delay);
+		msleep(pd->power_on_delay);
 	}
 
 	if (!pd->reset) {
@@ -531,7 +532,7 @@ static int s6e63m0_power_on(struct s6e63m0 *lcd)
 		return -EFAULT;
 	} else {
 		pd->reset(lcd->ld);
-		mdelay(pd->reset_delay);
+		msleep(pd->reset_delay);
 	}
 
 	ret = s6e63m0_ldi_init(lcd);
@@ -573,7 +574,7 @@ static int s6e63m0_power_off(struct s6e63m0 *lcd)
 		return -EIO;
 	}
 
-	mdelay(pd->power_off_delay);
+	msleep(pd->power_off_delay);
 
 	if (!pd->power_on) {
 		dev_err(lcd->dev, "power_on is NULL.\n");
-- 
1.7.2.5


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