linux-kernel - Re: [PATCH 36/49] drivers/video: Use vzalloc

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Date:	Mon, 8 Nov 2010 11:43:26 -0500
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Joe Perches <joe@...ches.com>
Cc:	Jiri Kosina <trivial@...nel.org>, Jaya Kumar <jayalk@...works.biz>,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>,
	linux-kernel@...r.kernel.org, xen-devel@...ts.xen.org,
	virtualization@...ts.osdl.org
Subject: Re: [PATCH 36/49] drivers/video: Use vzalloc

On Thu, Nov 04, 2010 at 08:08:00PM -0700, Joe Perches wrote:
> Signed-off-by: Joe Perches <joe@...ches.com>

Looks good on xen-fb.


> ---
>  drivers/video/arcfb.c        |    5 ++---
>  drivers/video/broadsheetfb.c |    4 +---
>  drivers/video/hecubafb.c     |    5 ++---
>  drivers/video/metronomefb.c  |    4 +---
>  drivers/video/xen-fbfront.c  |    3 +--
>  5 files changed, 7 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/video/arcfb.c b/drivers/video/arcfb.c
> index 3ec4923..86573e2 100644
> --- a/drivers/video/arcfb.c
> +++ b/drivers/video/arcfb.c
> @@ -515,11 +515,10 @@ static int __devinit arcfb_probe(struct platform_device *dev)
>  
>  	/* We need a flat backing store for the Arc's
>  	   less-flat actual paged framebuffer */
> -	if (!(videomemory = vmalloc(videomemorysize)))
> +	videomemory = vmalloc(videomemorysize);
> +	if (!videomemory)
>  		return retval;
>  
> -	memset(videomemory, 0, videomemorysize);
> -
>  	info = framebuffer_alloc(sizeof(struct arcfb_par), &dev->dev);
>  	if (!info)
>  		goto err;
> diff --git a/drivers/video/broadsheetfb.c b/drivers/video/broadsheetfb.c
> index ebda687..377dde3 100644
> --- a/drivers/video/broadsheetfb.c
> +++ b/drivers/video/broadsheetfb.c
> @@ -1101,12 +1101,10 @@ static int __devinit broadsheetfb_probe(struct platform_device *dev)
>  
>  	videomemorysize = roundup((dpyw*dpyh), PAGE_SIZE);
>  
> -	videomemory = vmalloc(videomemorysize);
> +	videomemory = vzalloc(videomemorysize);
>  	if (!videomemory)
>  		goto err_fb_rel;
>  
> -	memset(videomemory, 0, videomemorysize);
> -
>  	info->screen_base = (char *)videomemory;
>  	info->fbops = &broadsheetfb_ops;
>  
> diff --git a/drivers/video/hecubafb.c b/drivers/video/hecubafb.c
> index c77bcc6..a941e6f 100644
> --- a/drivers/video/hecubafb.c
> +++ b/drivers/video/hecubafb.c
> @@ -231,11 +231,10 @@ static int __devinit hecubafb_probe(struct platform_device *dev)
>  
>  	videomemorysize = (DPY_W*DPY_H)/8;
>  
> -	if (!(videomemory = vmalloc(videomemorysize)))
> +	videomemory = vzalloc(videomemorysize);
> +	if (!videomemory)
>  		return retval;
>  
> -	memset(videomemory, 0, videomemorysize);
> -
>  	info = framebuffer_alloc(sizeof(struct hecubafb_par), &dev->dev);
>  	if (!info)
>  		goto err_fballoc;
> diff --git a/drivers/video/metronomefb.c b/drivers/video/metronomefb.c
> index 63ed3b7..c0c358c 100644
> --- a/drivers/video/metronomefb.c
> +++ b/drivers/video/metronomefb.c
> @@ -628,12 +628,10 @@ static int __devinit metronomefb_probe(struct platform_device *dev)
>  	/* we need to add a spare page because our csum caching scheme walks
>  	 * to the end of the page */
>  	videomemorysize = PAGE_SIZE + (fw * fh);
> -	videomemory = vmalloc(videomemorysize);
> +	videomemory = vzalloc(videomemorysize);
>  	if (!videomemory)
>  		goto err_fb_rel;
>  
> -	memset(videomemory, 0, videomemorysize);
> -
>  	info->screen_base = (char __force __iomem *)videomemory;
>  	info->fbops = &metronomefb_ops;
>  
> diff --git a/drivers/video/xen-fbfront.c b/drivers/video/xen-fbfront.c
> index 428d273..81fcaea 100644
> --- a/drivers/video/xen-fbfront.c
> +++ b/drivers/video/xen-fbfront.c
> @@ -395,10 +395,9 @@ static int __devinit xenfb_probe(struct xenbus_device *dev,
>  	spin_lock_init(&info->dirty_lock);
>  	spin_lock_init(&info->resize_lock);
>  
> -	info->fb = vmalloc(fb_size);
> +	info->fb = vzalloc(fb_size);
>  	if (info->fb == NULL)
>  		goto error_nomem;
> -	memset(info->fb, 0, fb_size);
>  
>  	info->nr_pages = (fb_size + PAGE_SIZE - 1) >> PAGE_SHIFT;
>  
> -- 
> 1.7.3.1.g432b3.dirty
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