[Bug 60802] Corruption with DMA ring on cayman

https://bugs.freedesktop.org/show_bug.cgi?id=60802

--- Comment #19 from Alexandre Demers alexandre.f.demers@gmail.com --- (In reply to comment #18)

Ok, just finished bisecting, this is the first commit with the dmesg errors:

e110c98cae0ceae47db6cf26c08707505ce92479 is the first bad commit commit e110c98cae0ceae47db6cf26c08707505ce92479 Author: Alex Deucher alexander.deucher@amd.com Date: Sun Jan 27 22:13:52 2013 -0500

r600g: don't emit WAIT_UNTIL on cayman/TN (v2)

It shouldn't be needed and older kernels don't support
it.

v2: Replace with PS partial flush as before.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=59945

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Marek Olšák <maraeo@gmail.com>

And if I remember correctly I first noticed it with kernel 3.7.5 or 3.7.6, but I thing this was also around the time this mesa commit was pushed so it may have nothing to do with this kernel versions.

I'll double check if I'm getting the same thing as you. If this is right, we should open a different bug to track it.