From b6bef463f5e42e959c46773806693c3277179bc4 Mon Sep 17 00:00:00 2001
From: Jingoo Han <jg1.han@samsung.com>
Date: Thu, 21 Feb 2013 16:43:25 -0800
Subject: [PATCH] backlight: s6e63m0: remove redundant variable 'before_power'
'before_power' was used to check the previous status when resume() is
called. However, FB_BLANK_POWERDOWN was used in suspend() all the time,
so there is no need to check the previous status. Also, redundant return
variables are removed to reduce the code.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
drivers/video/backlight/s6e63m0.c | 24 +++---------------------
1 file changed, 3 insertions(+), 21 deletions(-)
diff --git a/drivers/video/backlight/s6e63m0.c b/drivers/video/backlight/s6e63m0.c
index 87831bba7a89..92e53e20b2ea 100644
--- a/drivers/video/backlight/s6e63m0.c
+++ b/drivers/video/backlight/s6e63m0.c
@@ -827,44 +827,26 @@ static int s6e63m0_remove(struct spi_device *spi)
}
#if defined(CONFIG_PM)
-static unsigned int before_power;
-
static int s6e63m0_suspend(struct spi_device *spi, pm_message_t mesg)
{
- int ret = 0;
struct s6e63m0 *lcd = dev_get_drvdata(&spi->dev);
dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power);
- before_power = lcd->power;
-
/*
* when lcd panel is suspend, lcd panel becomes off
* regardless of status.
*/
- ret = s6e63m0_power(lcd, FB_BLANK_POWERDOWN);
-
- return ret;
+ return s6e63m0_power(lcd, FB_BLANK_POWERDOWN);
}
static int s6e63m0_resume(struct spi_device *spi)
{
- int ret = 0;
struct s6e63m0 *lcd = dev_get_drvdata(&spi->dev);
- /*
- * after suspended, if lcd panel status is FB_BLANK_UNBLANK
- * (at that time, before_power is FB_BLANK_UNBLANK) then
- * it changes that status to FB_BLANK_POWERDOWN to get lcd on.
- */
- if (before_power == FB_BLANK_UNBLANK)
- lcd->power = FB_BLANK_POWERDOWN;
+ lcd->power = FB_BLANK_POWERDOWN;
- dev_dbg(&spi->dev, "before_power = %d\n", before_power);
-
- ret = s6e63m0_power(lcd, before_power);
-
- return ret;
+ return s6e63m0_power(lcd, FB_BLANK_UNBLANK);
}
#else
#define s6e63m0_suspend NULL