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

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Date:	Tue, 12 Apr 2011 17:21:15 -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, Cyril Hrubis wrote:
> Tried 2.6.39-rc3 both with and without CONFIG_MMC_UNSAFE_RESUME and the
> insert/remove detection works but both with and without unsafe resume, if the
> card is removed for more than second or two it fails to recognize the card
> after insertion failing with:
>
> mmc0: error -95 whilst initialising SD card

That's interesting.  Would you mind trying to bisect?  (Knowing whether
2.6.38 final does it, for example, would be very helpful.)

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?

Thanks,

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