netdev - Re: [PATCH] sh_eth Add SH7619 support

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Message-ID: <87myjv77nm.wl%ysato@users.sourceforge.jp>
Date:	Sat, 02 Aug 2008 11:34:21 -0400
From:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
To:	Simon Horman <horms@...ge.net.au>
Cc:	Nobuhiro Iwamatsu <iwamatsu@...auri.org>,
	Jeff Garzik <jeff@...zik.org>,
	Nobuhiro Iwamatsu <iwamatsu.nobuhiro@...esas.com>,
	netdev@...r.kernel.org, linux-sh@...r.kernel.org
Subject: Re: [PATCH] sh_eth Add SH7619 support

At Sat, 2 Aug 2008 17:30:22 +1000,
Simon Horman wrote:
> 
> On Fri, Aug 01, 2008 at 11:32:28AM -0400, Yoshinori Sato wrote:
> > At Fri, 1 Aug 2008 12:48:27 +0900,
> > Nobuhiro Iwamatsu wrote:
> > > 
> > > Hi, Sato-san.
> > > 
> > > 2008/8/1 Yoshinori Sato <ysato@...rs.sourceforge.jp>:
> > > > SH7619 have same SH7710 ethernet controler.
> > > > Add support for sh_eth driver.
> > > >
> > > > Signed-off-by: Yoshinori Sato <ysato@...rs.sourceforge.jp>
> > > >
> > > 
> > > <snip>
> > > 
> > > >
> > > > diff --git a/drivers/net/sh_eth.h b/drivers/net/sh_eth.h
> > > > index 45ad1b0..ca3cc5f 100644
> > > > --- a/drivers/net/sh_eth.h
> > > > +++ b/drivers/net/sh_eth.h
> > > > @@ -143,10 +143,11 @@
> > > >
> > > 
> > > <snip>
> > > 
> > > > +
> > > > +/* CPU endian from/to EDMAC endian */
> > > > +#if !defined(CONFIG_CPU_SUBTYPE_SH7619)
> > > > +#define cpu_to_edmac(x) cpu_to_le32(x)
> > > > +#define edmac_to_cpu(x) le32_to_cpu(x)
> > > > +#else
> > > > +#define cpu_to_edmac(x) cpu_to_be32(x)
> > > > +#define edmac_to_cpu(x) be32_to_cpu(x)
> > > > +#endif
> > > > +
> > > >  #endif
> > > I think that this depends on an endian not CPU dependence.
> > 
> > I agree.
> > But I'm no idea.
> > Are you have good idea?
> 
> Iwamatsu-san,
> 
> what is the difference between CONFIG_CPU_LITTLE_ENDIAN and
> __LITTLE_ENDIAN__ as used in drivers/net/sh_eth.h ?

EDMAC endian is no depend CPU endian.

-- 
Yoshinori Sato
<ysato@...rs.sourceforge.jp>
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