linux-kernel - Re: [PATCH 1/1] video: Removed Dead Code

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Message-Id: <20091119084343.0a34860f.kristoffer.ericson@gmail.com>
Date:	Thu, 19 Nov 2009 08:43:43 +0100
From:	Kristoffer Ericson <kristoffer.ericson@...il.com>
To:	mike@...radling.com
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] video: Removed Dead Code

On Wed, 18 Nov 2009 21:47:31 -0500
Michael Spradling <mike@...radling.com> wrote:

> Removed Dead code within video driver.
> 
> Signed-off-by: Michael Spradling <mike@...radling.com>

This code is needed for the extension of the bitblt code Im working on
so it shouldnt be removed.

> ---
>  drivers/video/s1d13xxxfb.c |   50 --------------------------------------------
>  1 files changed, 0 insertions(+), 50 deletions(-)
> 
> diff --git a/drivers/video/s1d13xxxfb.c b/drivers/video/s1d13xxxfb.c
> index 0deb0a8..d3059cd 100644
> --- a/drivers/video/s1d13xxxfb.c
> +++ b/drivers/video/s1d13xxxfb.c
> @@ -409,28 +409,6 @@ s1d13xxxfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
>   ************************************************************/
>  
>  /**
> - *	bltbit_wait_bitset - waits for change in register value
> - *	@info : framebuffer structure
> - *	@bit  : value expected in register
> - *	@timeout : ...
> - *
> - *	waits until value changes INTO bit
> - */
> -static u8
> -bltbit_wait_bitset(struct fb_info *info, u8 bit, int timeout)
> -{
> -	while (!(s1d13xxxfb_readreg(info->par, S1DREG_BBLT_CTL0) & bit)) {
> -		udelay(10);
> -		if (!--timeout) {
> -			dbg_blit("wait_bitset timeout\n");
> -			break;
> -		}
> -	}
> -
> -	return timeout;
> -}
> -
> -/**
>   *	bltbit_wait_bitclear - waits for change in register value
>   *	@info : frambuffer structure
>   *	@bit  : value currently in register
> @@ -453,34 +431,6 @@ bltbit_wait_bitclear(struct fb_info *info, u8 bit, int timeout)
>  	return timeout;
>  }
>  
> -/**
> - *	bltbit_fifo_status - checks the current status of the fifo
> - *	@info : framebuffer structure
> - *
> - *	returns number of free words in buffer
> - */
> -static u8
> -bltbit_fifo_status(struct fb_info *info)
> -{
> -	u8 status;
> -
> -	status = s1d13xxxfb_readreg(info->par, S1DREG_BBLT_CTL0);
> -
> -	/* its empty so room for 16 words */
> -	if (status & BBLT_FIFO_EMPTY)
> -		return 16;
> -
> -	/* its full so we dont want to add */
> -	if (status & BBLT_FIFO_FULL)
> -		return 0;
> -
> -	/* its atleast half full but we can add one atleast */
> -	if (status & BBLT_FIFO_NOT_FULL)
> -		return 1;
> -
> -	return 0;
> -}
> -
>  /*
>   *	s1d13xxxfb_bitblt_copyarea - accelerated copyarea function
>   *	@info : framebuffer structure
> -- 
> 1.6.5.2
> 
> 


-- 
Kristoffer Ericson <kristoffer.ericson@...il.com>
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