netdev - Re: [PATCH] net: sh_eth alignment fix for sh7724 using NET_IP

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Date:	Mon, 14 Dec 2009 23:15:34 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	magnus.damm@...il.com
Cc:	netdev@...r.kernel.org, lethal@...ux-sh.org,
	linux-sh@...r.kernel.org
Subject: Re: [PATCH] net: sh_eth alignment fix for sh7724 using NET_IP_ALIGN

From: Magnus Damm <magnus.damm@...il.com>
Date: Tue, 15 Dec 2009 16:13:47 +0900

> Sorry about the confusion, but the #ifdef was actually intentional. =)
> I can't find any description of the RPADIR register in the sh7724 data
> sheet, but testing shows that the buffers are adjusted properly. So
> since I don't know the register layout I prefer to optimize for the
> known working combination of NET_IP_ALIGN == 2 and simply disable
> .rpadir usage for other NET_IP_ALIGN cases.

NET_IP_ALIGN is never != 2 on SUPERH

SH_ETH depends on SUPERH

It's a fantasy ifdef, of sorts. :-)

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