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

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Message-ID: <20110412224333.GA22640@atrey.karlin.mff.cuni.cz>
Date:	Wed, 13 Apr 2011 00:43:33 +0200
From:	Cyril Hrubis <metan@....cz>
To:	Chris Ball <cjb@...top.org>
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!
> > 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.)

It may need one or two tries on 2.6.38 but it's there too.

> 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?

Fails in the mmc_app_cmd.

-- 
metan
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