linux-kernel - Re: [PATCH v5] video: add OpenCores VGA/LCD framebuffer driver

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Date:	Mon, 13 Jan 2014 08:19:11 +0200
From:	Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>
To:	Jingoo Han <jg1.han@...sung.com>
Cc:	'Tomi Valkeinen' <tomi.valkeinen@...com>,
	'Jean-Christophe Plagniol-Villard' <plagnioj@...osoft.com>,
	linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org
Subject: Re: [PATCH v5] video: add OpenCores VGA/LCD framebuffer driver

On Mon, Jan 13, 2014 at 10:24:49AM +0900, Jingoo Han wrote:
> On Saturday, January 11, 2014 5:13 AM, Stefan Kristiansson wrote:
> > +#include <linux/module.h>
> > +#include <linux/kernel.h>
> > +#include <linux/errno.h>
> > +#include <linux/string.h>
> > +#include <linux/slab.h>
> > +#include <linux/delay.h>
> > +#include <linux/mm.h>
> > +#include <linux/dma-mapping.h>
> > +#include <linux/fb.h>
> > +#include <linux/init.h>
> > +#include <linux/io.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/of.h>
> 
> Would you re-order these headers alphabetically?
> It enhances the readability.
> 

OK

> [.....]
> 
> > +struct ocfb_dev {
> > +	struct fb_info info;
> > +	void __iomem *regs;
> > +	/* flag indicating whether the regs are little endian accessed */
> > +	int little_endian;
> > +	/* Physical and virtual addresses of framebuffer */
> > +	phys_addr_t fb_phys;
> > +	void __iomem *fb_virt;
> > +	u32 pseudo_palette[PALETTE_SIZE];
> > +};
> 
> Here, 'fb_virt' is already defined as 'void __iomem *'.
> 
> [.....]
> 
> > +	fbdev->info.fix.smem_start = fbdev->fb_phys;
> > +	fbdev->info.screen_base = (void __iomem *)fbdev->fb_virt;
> 
> Please remove unnecessary casting as below, because 'fb_virt' is already
> defined as 'void __iomem *'.
> 
> +	fbdev->info.screen_base = fbdev->fb_virt;
> 
> > +	fbdev->info.pseudo_palette = fbdev->pseudo_palette;
> > +
> > +	/* Clear framebuffer */
> > +	memset_io((void __iomem *)fbdev->fb_virt, 0, fbsize);
> 
> Same here.
> 
> +	memset_io(fbdev->fb_virt, 0, fbsize);
> 

Nice catch, will do.

Stefan
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