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SubjectRe: [PATCH 08/16] viafb: Do not probe for LVDS/TMDS on OLPC XO-1.5
Jonathan Corbet schrieb:
> On Fri, 09 Apr 2010 23:40:55 +0200
> Florian Tobias Schandinat <FlorianSchandinat@gmx.de> wrote:
>
>> I don't like the idea of OLPC specific code. Isn't there any way to
>> speed this up in general?
>
> Architecture-specific code happens. OLPCs are wired differently; if
> you go trying to do LVDS out those GPIO ports on an OLPC, you'll not
> end up talking to the hardware you think you're talking to. The best
> thing to do is to avoid it altogether.

*sigh* I feared it would be something like this.

>> There is not yet even an option for OLPC_XO_1_5 (in contrast to
>> CONFIG_OLPC) in mainline. Is such a thing planned?
>
> Yes, it is. That's part of the remaining OLPC support code which has
> also been brought forward to 2.6.34 with the intention of mainlining it.
>
>> I can't really see anything that would speak for accepting this patch
>> now in current mainline, sorry.
>
> If you can come up with a better solution to the problem, I'm all
> ears. But without it you'll have a hard time running mainline kernels
> on XO 1.5 systems. It is all coming, but the OLPC folks are scrambling
> to get everything together; I don't think we really need to make things
> harder for them.

Sadly no as you probably know the OLPC hardware much better than me.
However I do not intend to give the OLPC folks a hard time.

> That said, machine_is_olpc() is properly defined for all
> configurations, so the #ifdefs can (and should) come out.

I'm not sure I get you right here. If you talk about removing the
defines and only letting the machine check that is something that I
would accept now. If this is not what you meant I think it would be
better to move this patch to the series adding the config option.


Thanks,

Florian Tobias Schandinat


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