linux-kernel - Re: [PATCH v2] mtd: vt8500: Add support for Wondermedia Serial Flash Controller

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Date:	Tue, 15 Jan 2013 21:11:12 +0200
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Tony Prisk <linux@...sktech.co.nz>
Cc:	David Woodhouse <dwmw2@...radead.org>,
	vt8500-wm8505-linux-kernel@...glegroups.com,
	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] mtd: vt8500: Add support for Wondermedia Serial
 Flash Controller

On Wed, 2013-01-16 at 06:45 +1300, Tony Prisk wrote:
> On Tue, 2013-01-15 at 16:55 +0200, Artem Bityutskiy wrote:
> > On Mon, 2012-12-31 at 10:00 +1300, Tony Prisk wrote:
> > > This patch adds support for the Wondermedia serial flash controller
> > > found on WM8505, WM8650 and WM8850 SoCs.
> > > 
> > > Signed-off-by: Tony Prisk <linux@...sktech.co.nz>
> > > ---
> > > v2: Whitespace tidyup
> > 
> > Hi, would you please take a look at these warings, identified by aiaiai:
> > 
> > Successfully built configuration "x86_64_defconfig,x86_64,", results:
> > 
> > --- before_patching.log
> > +++ after_patching.log
> > @@ @@
> > +drivers/mtd/devices/wmt_sflash.c: In function ‘sf_read’:
> > +drivers/mtd/devices/wmt_sflash.c:425:9: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘size_t’ [-Wformat]
> > +drivers/mtd/devices/wmt_sflash.c: In function ‘sf_sector_write’:
> > +drivers/mtd/devices/wmt_sflash.c:442:16: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
> > +drivers/mtd/devices/wmt_sflash.c:442:24: warning: cast removes address space of expression [sparse]
> > +drivers/mtd/devices/wmt_sflash.c:458:16: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
> > +drivers/mtd/devices/wmt_sflash.c:458:31: warning: incorrect type in argument 1 (different address spaces) [sparse]
> > +drivers/mtd/devices/wmt_sflash.c:458:31:    expected void volatile [noderef] <asn:2>*dst [sparse]
> > +drivers/mtd/devices/wmt_sflash.c:458:31:    got unsigned char [usertype] *<noident> [sparse]
> > +drivers/mtd/devices/wmt_sflash.c:465:17: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
> > +drivers/mtd/devices/wmt_sflash.c:465:39: warning: incorrect type in argument 1 (different address spaces) [sparse]
> > +drivers/mtd/devices/wmt_sflash.c:465:39:    expected void volatile [noderef] <asn:2>*dst [sparse]
> > +drivers/mtd/devices/wmt_sflash.c:465:39:    got unsigned char [usertype] *<noident> [sparse]
> > 
> 
> Apologies - This driver shouldn't be selectable for x86_64.
> It is an ARM driver for an embedded device. Will fix.

Note, there are also warnings when it is compiled for other platforms,
not only x86_64. Take a look at them. Also note, than many warnings come
from sparse, you probably just did not run it.

-- 
Best Regards,
Artem Bityutskiy

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