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Date: Tue, 25 Mar 2014 20:07:35 -0400
From: Jason Cooper <jason@lakedaemon.net>
To: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: Alexander Elbs <alex@segv.de>, Nicolas Pitre <nico@fluxnic.net>,
        Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
        linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
        bonbons@linux-vserver.org, Andrew Lunn <andrew@lunn.ch>,
        Gregory CLEMENT <gregory.clement@free-electrons.com>
Subject: Re: mvsdio: unhandled interrupt, mmc writes queuing up
Message-ID: <20140326000735.GI28304@titan.lakedaemon.net>
References: <20140325192759.GJ29769@segv.de>
 <53320055.9080307@gmail.com>
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On Tue, Mar 25, 2014 at 11:16:53PM +0100, Sebastian Hesselbarth wrote:
> On 03/25/2014 08:27 PM, Alexander Elbs wrote:
> >> On Wed, 19 Mar 2014, Bruno Prémont wrote:
> >>> Since upgrading my Sheevaplug from 3.7.2 to 3.13.6 (FDT) I'm seeing
> >>>   mvsdio f1090000.mvsdio: unhandled interrupt status=0x8810 en=0x0000 pio=0
> >>> at varied timings.
> > 
> > I have the same problem on my sheevaplug.
> > 
> >> It has been many years since I've looked at the code for this driver.  
> >> I'm therefore including Thomas Petazzoni to the CC list as he appears to 
> >> have been the most active since then.
> >>
> >> The reported status seems to indicate missing data in the context of a 
> >> transfer with CMD12, and a CRC error ensued of course.
> >>
> >> At this point I'd suggest testing intermediate kernels between 3.7 and 
> >> 3.13, and try bisection until you find the offending commit.
> >>
> >> [...]
> >>> I get same results with 3.14-rc7.
> >>
> >> Excellent, that reduces the search space significantly.  You can do a 
> >> git bisect directly.
> > 
> > I did a git bisect.
> >   good: no message "unhandled interrupt"
> >   bad: message above appears
> >   skipped: unbootable kernel, usually stuck after the line "Uncompressing Linux". 
> > 
> > So far I am down to a few commits after 3.11.
> > 
> > $ git bisect view --oneline
> > 2326f04 (refs/bisect/bad) ARM: kirkwood: convert to DT irqchip and clocksource
> 
> Can you please try the patches contained in [1]?
> 
> They have been Acked-by Jason Cooper, but I guess we simply lost
> track of them.
> 
> Sebastian
> 
> [1] https://lkml.org/lkml/2013/11/15/276

Bruno,

If these work for you, please send a Tested-by and I'll keep better
track of them this time.  I think these were sent before we had a
process for shuttling things into irqchip...

thx,

Jason.