linux-kernel - Re: [PATCH 1/1] mfd: Fix runtime warning caused by duplicate device registration

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: <4FF592A9.5050706@linaro.org>
Date:	Thu, 05 Jul 2012 14:12:09 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
CC:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linus.walleij@...ricsson.com, arnd@...db.de, sameo@...ux.intel.com
Subject: Re: [PATCH 1/1] mfd: Fix runtime warning caused by duplicate device
 registration

On 05/07/12 14:03, Mark Brown wrote:
> On Thu, Jul 05, 2012 at 01:55:50PM +0100, Lee Jones wrote:
>> On 05/07/12 13:45, Mark Brown wrote:
>
>>> Right, so what I'm saying is that what I'd expect unless there's
>>> something unusual going on is that you wouldn't be doing the separate
>>> registration of the AB8500 here and would instead be passing the
>>> platform data for the AB8500 through in the same way you pass the DT
>>> data through.
>
>> Then were would you register it, if not here?
>
> Same place as for DT.

That is a possibility, but the idea is to reduce code in the platform 
area, not add to it. We'd also need a completely separate platform_data 
structure to the one we use for platform registration, as much of it has 
now been moved into Device Tree. The regulators are a good example of 
this, but there's also GPIO information which is no longer relevant etc.

I do believe that registering the AB8500 from the DB8500 is appropriate 
though, for the simple reason that the AB8500 is a sub-device to the 
DB8500. I think this is the correct thing to do. But anyway, as I said 
before, that ship has sailed. We _already_ do this. All this patch does 
is prevent the AB8500 from being registered twice when DT is not enabled.

-- 
Lee Jones
Linaro ST-Ericsson Landing Team Lead
M: +44 77 88 633 515
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/