linux-kernel - Re: [PATCH] sound/mixart: avoid redefining {readl,write}

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Message-ID: <s5hoc9hrgcf.wl%tiwai@suse.de>
Date:	Mon, 22 Nov 2010 08:02:24 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Florian Fainelli <florian@...nwrt.org>
Cc:	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
	Jaroslav Kysela <perex@...ex.cz>
Subject: Re: [PATCH] sound/mixart: avoid redefining {readl,write}_{le,be} accessors

At Fri, 12 Nov 2010 18:29:11 +0100,
Florian Fainelli wrote:
> 
> On Tuesday 09 November 2010 18:29:08 Florian Fainelli wrote:
> > From: Florian Fainelli <florian@...nwrt.org>
> 
> Takashi, do you have any comments on this patch?

Sorry for the late reply.  Yes, I already applied it weeks ago, but
the reply mail wasn't sent out but stuck in my output queue by some
reason during my vacation.

Anyway, thanks for the patch.  I think it's OK in the way you did
for the time being.  Ideally, read*_be() should be defined on all
platforms, though.


Takashi

> 
> Thanks!
> 
> > 
> > If the platform already provides a definition for these accessors
> > do not redefine them. The warning was caught on MIPS.
> > 
> > Signed-off-by: Florian Fainelli <florian@...nwrt.org>
> > ---
> > diff --git a/sound/pci/mixart/mixart_hwdep.h
> > b/sound/pci/mixart/mixart_hwdep.h index a46f508..812e288 100644
> > --- a/sound/pci/mixart/mixart_hwdep.h
> > +++ b/sound/pci/mixart/mixart_hwdep.h
> > @@ -25,11 +25,21 @@
> > 
> >  #include <sound/hwdep.h>
> > 
> > +#ifndef readl_be
> >  #define readl_be(x) be32_to_cpu(__raw_readl(x))
> > +#endif
> > +
> > +#ifndef writel_be
> >  #define writel_be(data,addr) __raw_writel(cpu_to_be32(data),addr)
> > +#endif
> > 
> > +#ifndef readl_le
> >  #define readl_le(x) le32_to_cpu(__raw_readl(x))
> > +#endif
> > +
> > +#ifndef writel_le
> >  #define writel_le(data,addr) __raw_writel(cpu_to_le32(data),addr)
> > +#endif
> > 
> >  #define MIXART_MEM(mgr,x)	((mgr)->mem[0].virt + (x))
> >  #define MIXART_REG(mgr,x)	((mgr)->mem[1].virt + (x))
> 
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