linux-kernel - Re: [PATCH] MMC: au1xmmc R6 response support

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Date:	Thu, 25 Jan 2007 09:19:44 +0100
From:	Manuel Lauss <mano@...rinelk.homelinux.net>
To:	Pierre Ossman <drzeus-mmc@...eus.cx>
Cc:	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] MMC: au1xmmc R6 response support

Hi Pierre,
> 
> > HEAD has this fixed. Every spec I can get my hands on states that R1 and
> > R6 have the same format. So it sounds like this controller is doing
> > something stupid.
> 
> Apparently my HW is broken... I got a hold of a DB1200 demoboard and
> the distributed version works fine there.

Actually, the bug is that because of MMC_RSP_R6 not being handled in
the switch in au1xmmc_send_command(), the controller gets told that
no response is expected. I changed the R6 to R1 in mmc.h, thats why
it worked in the demoboard, and it also works now on the previously
thought-to-be-broken HW.

So it's only broken in releases < 2.6.20-rc6.

Thanks,

-- 
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