linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Guenter Roeck <guenter.roeck@ericsson.com>
To: Jonathan Nieder <jrnieder@gmail.com>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>,
	linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Roman Mamedov <rm@romanrm.ru>,
	Manuel Roeder <manuel_roeder@gmx.de>,
	Michael Ott <michael@king-coder.de>,
	Rodolfo Giometti <giometti@linux.it>,
	Mauro Barella <mbarella@vds-it.com>
Subject: Re: [2.6.37 -> 2.6.38 regression] "mv64xxx: I2C bus locked, block: 1, time_left: 0" every few seconds
Date: Sat, 7 Jan 2012 16:45:02 -0800	[thread overview]
Message-ID: <20120108004502.GA20549@ericsson.com> (raw)
In-Reply-To: <20120101073255.GA2402@elie.hsd1.il.comcast.net>

On Sun, Jan 01, 2012 at 01:32:55AM -0600, Jonathan Nieder wrote:
> Hi,
> 
> Roman Mamedov wrote[1]:
> 
> > This bug is still present for me in the latest kernel version in
> > Debian testing (3.1.6).
> >
> > The last properly working kernel version seems to be:
> [...]
> > And the problem occurs since:
> [...]
> 
> Thanks.  Arnaud, any hints?  To summarize:
> 
>  - Michael Ott reported with Debian kernel 2.6.38-3 (which is closely
>    based on stable v2.6.38.2):
> 
> 	syslog tell me every few seconds:
> 	i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
> 
>  - Manuel Roeder reported the same and found that upstream v2.6.38
>    triggers the problem and v2.6.37.6 does not.
> 
>  - Roman Mamedov finds the bug present in Debian 3.1.6-1 (which
>    is closely based on stable v3.1.6) and Debian 2.6.37-2 (based on
>    stable v2.6.37.2) but not Debian 2.6.37-1 (based on mainline
>    v2.6.37).
> 
> The regression range described above seems a little inconsistent to
> me, so maybe there's something more going on.
> 
Points to commit eda6bee6c7e67b5bd17bdbced0926f5687f686d5 (i2c-mv64xxx: send repeated START
between messages in xfer). Maybe you can back it out and see if it makes a difference.

Guenter

  reply	other threads:[~2012-01-08  0:47 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20120101042401.4bef017e@natsu>
2012-01-01  7:32 ` [2.6.37 -> 2.6.38 regression] "mv64xxx: I2C bus locked, block: 1, time_left: 0" every few seconds Jonathan Nieder
2012-01-08  0:45   ` Guenter Roeck [this message]
2012-01-30 20:44     ` Roman Mamedov
2012-01-30 20:53       ` Roman Mamedov

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20120108004502.GA20549@ericsson.com \
    --to=guenter.roeck@ericsson.com \
    --cc=arnaud.patard@rtp-net.org \
    --cc=giometti@linux.it \
    --cc=jrnieder@gmail.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-i2c@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=manuel_roeder@gmx.de \
    --cc=mbarella@vds-it.com \
    --cc=michael@king-coder.de \
    --cc=rm@romanrm.ru \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).