netdev - Re: [PATCH] phylib: make mdio-gpio work without OF (v2)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <491161AC.8080405@teltonika.lt>
Date:	Wed, 05 Nov 2008 11:04:44 +0200
From:	Paulius Zaleckas <paulius.zaleckas@...tonika.lt>
To:	unlisted-recipients:; (no To-header on input)
CC:	Mike Frysinger <vapier.adi@...il.com>,
	David Brownell <david-b@...bell.net>,
	Grant Likely <grant.likely@...retlab.ca>,
	netdev@...r.kernel.org, linux-arm-kernel@...ts.arm.linux.org.uk,
	linux-embedded@...r.kernel.org,
	Laurent Pinchart <laurentp@...-semaphore.com>
Subject: Re: [PATCH] phylib: make mdio-gpio work without OF (v2)

Paulius Zaleckas wrote:
> Mike Frysinger wrote:
>> On Wed, Nov 5, 2008 at 03:11, David Brownell wrote:
>>> On Tuesday 04 November 2008, Mike Frysinger wrote:
>>>>> If indeed OF functions don't have declarations which are
>>>>> available on all platforms, that might be worth fixing
>>>>> to enable this approach to #ifdef elimination.
>>>> OF is open firmware right ?  no way there's going to be OF for every
>>>> port that supports GPIO, so filling out the stubs in linux/of_gpio.h
>>>> will need to be done.
>>> In which case the boolean "we don't have OF" would be "false" and
>>> any code referencing the declared functions would be compiled out
>>> (being dead code/data).  So there would be no link-time references
>>> to any OF routines... standard technique.
>> i understand the compiler side just fine.  my point is that the
>> current linux/of_gpio.h only defines the OF structure and related
>> prototypes when CONFIG_OF_GPIO is defined.  so it needs updating
>> first.
> 
> This is small problem compared to what you will find in linux/of_device.h
> It includes <asm/of_device.h> which contains main of_device structure
> and this won't work with any non OF platform. Maybe the best solution is
> to write separate driver for OF which will be just wrapper for platform
> driver... Just like you suggested.

Oops... Not you, but Marc Pignat suggested.
 
>> -mike
>>
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html