From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Barry Song <21cnbao@gmail.com>
Cc: alsa-devel@alsa-project.org, Barry Song <bs14@csr.com>,
Takashi Iwai <tiwai@suse.de>,
linaro-toolchain@lists.linaro.org,
Zhiwu Song <zhiwu.song@csr.com>,
Binghua Duan <binghua.duan@csr.com>,
lrg@slimlogic.co.uk
Subject: Re: [PATCH] ASoC: prevent compilers from optimising pll calculation into __aeabi__uldivmod
Date: Wed, 27 Apr 2011 16:12:49 +0100 [thread overview]
Message-ID: <20110427151249.GE31952@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <BANLkTimOdPO=LJNAM8EqXnMcx3xHPcoOXA@mail.gmail.com>
On Wed, Apr 27, 2011 at 11:00:18PM +0800, Barry Song wrote:
> 2011/4/27 Mark Brown <broonie@opensource.wolfsonmicro.com>
> > If we do have to do something in the callers rather than in do_div() the
> > annotation seems substantially more taseful than inserting a random asm
> > into the code.
> I agree. for this patch which will not be applied, people can just get
> information about how to workaround the gcc issue while they have the
> same problem. google can find there are other people who failed to
> compile wm8974 module too. eg.
> http://irclogs.ubuntu.com/2010/03/30/%23ubuntu-arm.txt
> Andrew Stubbs, Michael Hope in Linaro's toolchain team are working
> hard on this gcc issue. there have been many update today:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48783
Is this just some Linaro toolchain that has the issue rather than a
vanilla GCC release? If so and they fix the compiler bug it doesn't
seem terribly useful to bodge it in mainline.
next prev parent reply other threads:[~2011-04-27 15:12 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-27 7:27 [PATCH] ASoC: prevent compilers from optimising pll calculation into __aeabi__uldivmod Barry Song
2011-04-27 8:19 ` Takashi Iwai
2011-04-27 8:24 ` Barry Song
2011-04-27 8:41 ` Takashi Iwai
2011-04-27 8:50 ` Barry Song
2011-04-27 14:30 ` Mark Brown
[not found] ` <20110427143002.GC31952-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2011-04-27 15:00 ` [alsa-devel] " Barry Song
2011-04-27 15:12 ` Mark Brown [this message]
[not found] ` <20110427151249.GE31952-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2011-04-27 15:23 ` Barry Song
[not found] ` <BANLkTin4y192A0Jdujv2t5tjoccmUBzQMQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-04-27 15:28 ` Barry Song
2011-04-27 22:30 ` Michael Hope
2011-04-28 11:40 ` Mark Brown
2011-04-27 8:49 ` Mark Brown
-- strict thread matches above, loose matches on Subject: below --
2011-04-27 14:59 Stephen Warren
2011-04-27 15:06 ` Mark Brown
2011-04-27 15:09 ` Barry Song
2011-04-27 15:45 ` Barry Song
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