[2.6.37 -> 2.6.38 regression] "mv64xxx: I2C bus locked, block: 1, time_left: 0" every few seconds
guenter.roeck at ericsson.com
Sat Jan 7 19:45:02 EST 2012
On Sun, Jan 01, 2012 at 01:32:55AM -0600, Jonathan Nieder wrote:
> Roman Mamedov wrote:
> > 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 v22.214.171.124):
> 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 v126.96.36.199 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 v188.8.131.52) but not Debian 2.6.37-1 (based on mainline
> 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.
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