linux-kernel - Re: zaurus: mmcblk0: error -110

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Message-ID: <m37hazxi7l.fsf@pullcord.laptop.org>
Date:	Tue, 12 Apr 2011 17:39:26 -0400
From:	Chris Ball <cjb@...top.org>
To:	Cyril Hrubis <metan@....cz>
Cc:	pavel@....cz, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, eric.y.miao@...il.com,
	utx@...guin.cz, zaurus-devel@...ts.linuxtogo.org,
	marek.vasut@...il.com, linux-mmc@...r.kernel.org
Subject: Re: zaurus: mmcblk0: error -110

Hi,

On Tue, Apr 12 2011, Chris Ball wrote:
> There aren't many -EOPNOTSUPP returns in the stack.  I see:
>
> card/block.c: mmc_blk_issue_secdiscard_rq and mmc_blk_issue_discard_rq
> card/core.c: mmc_erase
> core/sd_ops.c: mmc_app_cmd
>
> Mind doing some instrumentation to figure out which it is?

Actually, this probably isn't necessary -- mmc_app_cmd() is the only call
involved in the setup path, via mmc_sd_init_card() -> mmc_app_send_scr().

So, a better question: was mmc_app_send_scr() succeeding on your previous
kernels?  There hasn't been much change in this area lately.

Thanks,

- Chris.
-- 
Chris Ball   <cjb@...top.org>   <http://printf.net/>
One Laptop Per Child
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