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Re: [PATCH] MIPS: Fixups of ALSA memory maps

To: Ralf Baechle <ralf@linux-mips.org>
Subject: Re: [PATCH] MIPS: Fixups of ALSA memory maps
From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 26 Nov 2009 15:51:10 +0100
Cc: wuzhangjin@gmail.com, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, Jaroslav Kysela <perex@perex.cz>, alsa-devel@alsa-project.org, linux-mips@linux-mips.org, linux-kernel@vger.kernel.org
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At Mon, 23 Nov 2009 12:36:15 +0000,
Ralf Baechle wrote:
> 
> On Mon, Nov 23, 2009 at 09:56:39AM +0100, Takashi Iwai wrote:
> 
> > > On Wed, 2009-11-18 at 18:47 +0100, Takashi Iwai wrote:
> > > [...]
> > > > 
> > > > Well, we haven't reached the consensus.  The discussion faded away
> > > > somehow mainly because I had too little time to update and ping people
> > > > again.
> > > > 
> > > > In Tokyo, I talked with some guys regarding this.  Ben agreed to take
> > > > this approach for ppc, and David said that he doesn't mind for sparc
> > > > part.   Fujita-san mentioned it's no big problem to add one op from
> > > > the generic dma_ops.
> > > > 
> > > > So, maybe somehow need to convince James in the end (and ask Paul to
> > > > check SH part, too), then it'll be all up... theoretically :)
> > > > 
> > > > Anyway, I'm going to raise the discussion again on linux-arch.
> > > > I'm afraid it's a bit too late game for 2.6.33, but starting now is
> > > > better than too late again.
> > > 
> > > Hi, Takashi Iwai
> > > 
> > > Before the API stuff going into the mainline(2.6.33), can we apply this
> > > "[PATCH] MIPS: Fixups of ALSA memory maps"(This is the minimal
> > > necessares) as a current fixup. and then we will not get a broken sound
> > > support for MIPS, and also the support to the latest Loongson2F family
> > > machines will benefit from it.
> > > 
> > > and Ralf, what about your suggestion?
> > 
> > The question is whether this hack can be safely added for all MIPS
> > platforms just by checking kconfig.  I had an impression that rather
> > many things have to be checked in the runtime.
> > 
> > As I have really little clue about MIPS architecture, I'd like let
> > MIPS guys decide about it...
> 
> Okay, I'll cook up a nice kludge.  It can't cover all cases but it will
> be an improvment for most platforms.

OK, but I found that the original patch doesn't work correctly for
some cases, as I mentioned in another thread.  I'm going to send a patch
set soon as a new thread.


thanks,

Takashi

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