linux-kernel - Re: [PATCH v2] backlight: add lms501kf03 LCD driver

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Date:	Wed, 19 Dec 2012 15:07:16 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Jingoo Han <jg1.han@...sung.com>
Cc:	"'LKML'" <linux-kernel@...r.kernel.org>,
	"'Richard Purdie'" <rpurdie@...ys.net>,
	"'Joe Perches'" <joe@...ches.com>,
	"'Devendra Naga'" <devendra.aaru@...il.com>,
	"'Ilho Lee'" <ilho215.lee@...sung.com>
Subject: Re: [PATCH v2] backlight: add lms501kf03 LCD driver

On Tue, 18 Dec 2012 17:46:46 +0900
Jingoo Han <jg1.han@...sung.com> wrote:

> Add the lms501kf03 LCD panel driver. The lms501kf03 LCD panel (800
> x 480) driver uses 3-wired SPI inteface.

Looks OK.

> +static unsigned int before_power;

This is unused.  Can I zap it?


--- a/drivers/video/backlight/lms501kf03.c~backlight-add-lms501kf03-lcd-driver-fix
+++ a/drivers/video/backlight/lms501kf03.c
@@ -388,7 +388,6 @@ static int lms501kf03_remove(struct spi_
 }
 
 #if defined(CONFIG_PM)
-static unsigned int before_power;
 
 static int lms501kf03_suspend(struct spi_device *spi, pm_message_t mesg)
 {
@@ -396,8 +395,6 @@ static int lms501kf03_suspend(struct spi
 
 	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.
_

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