linux-kernel - Re: [PATCH] drivers: Let several drivers depends on HAS_IOMEM for 'devm_ioremap

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Date:	Wed, 23 Jul 2014 14:30:23 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Chen Gang <gang.chen.5i5j@...il.com>
Cc:	linux-iio@...r.kernel.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>, teg@...m.no,
	Thierry Reding <thierry.reding@...il.com>,
	Lennox Wu <lennox.wu@...il.com>, Marek Vasut <marex@...x.de>,
	Liqin Chen <liqin.linux@...il.com>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Richard Weinberger <richard@....at>,
	Geert Uytterhoeven <geert@...ux-m68k.org>, msalter@...hat.com,
	Guenter Roeck <linux@...ck-us.net>, linux-pwm@...r.kernel.org,
	devel@...verdev.osuosl.org, linux-watchdog@...r.kernel.org,
	arnd@...db.de, linux-input@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	dmitry.torokhov@...il.com,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	knaack.h@....de, Martin Schwidefsky <schwidefsky@...ibm.com>,
	Mischa.Jonker@...opsys.com, jic23@...nel.org
Subject: Re: [PATCH] drivers: Let several drivers depends on HAS_IOMEM for
 'devm_ioremap_resource'

On Wed, Jul 23, 2014 at 07:09:22PM +0800, Chen Gang wrote:
> 
> 
> On 07/17/2014 05:19 PM, Chen Gang wrote:
> > 
> > 
> > On 07/17/2014 05:16 PM, Dan Carpenter wrote:
> >> On Thu, Jul 17, 2014 at 04:59:09PM +0800, Chen Gang wrote:
> >>>>> +	return (__force void __iomem *)ERR_PTR(-ENXIO);
> >>>>
> >>>> There's apparently an IOMEM_ERR_PTR() for this nowadays...
> >>>>
> >>>
> >>> IOMEM_ERR_PTR() is defined within "lib/devres.c", not in "./include".
> >>> But may we move it from "lib/devres.c" to "./include/linux/err.h"?
> >>>
> >>> For me, I am not quite sure, it may need additional discussion, but at
> >>> least, that will be another patch.
> >>
> >> Yes.  Move it there.  That is the right place.
> >>
> 
> Sorry for replying late about IOMEM_ERR_PTR().
> 
> Although no objections within 2 days, for me, when move something to
> generic header file, it is not only for future using, but also for
> solving current issue, or it has to be suspended for waiting 'trigger'.
> 
> So for me, the patch about IOMEM_ERR_PTR() need be suspended, until some
> member find an issue which may be related with IOMEM_ERR_PTR(), more or
> less.

Matthias Brugger already moved it to include/linux/io.h on Friday.

regards,
dan carpenter

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