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

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Date:	Wed, 23 Jul 2014 19:09:22 +0800
From:	Chen Gang <gang.chen.5i5j@...il.com>
To:	Dan Carpenter <dan.carpenter@...cle.com>
CC:	Thierry Reding <thierry.reding@...il.com>,
	linux-iio@...r.kernel.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>, teg@...m.no,
	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 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.

> 
> OK, thanks, if no another objections within 2 days, I shall send another
> related patch for it.
> 

Thanks.
-- 
Chen Gang

Open, share, and attitude like air, water, and life which God blessed
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