On 23/09/14 15:51, Daniel Vetter wrote:
On Tue, Sep 23, 2014 at 03:48:25PM +0300, Jani Nikula wrote:
On Mon, 15 Sep 2014, Daniel Vetter <daniel@xxxxxxxx> wrote:
On Sat, Sep 13, 2014 at 06:25:54PM +0200, Mario Kleiner wrote:
The current drm-next misses Ville's original Patch 14/19, the one i first
objected, then objected to my objection. It is needed to avoid actual
regressions. Attached a trivially rebased (v2) of Ville's patch to go on top
of drm-next, also as tgz in case my e-mail client mangles the patch again,
because it's one of those "email hates me" weeks.
Oh dear, I've made a decent mess of all of this really. Picked up to make
sure it doesn't get lost again.
After all this nice ping pong our QA has reported a bisected regression
on this commit: https://bugs.freedesktop.org/show_bug.cgi?id=84161
Looks like a minuscule timing change which resulted in us detecting a fifo
underrun. Or at least I don't see any other related information that would
indicate otherwise ...
-Daniel
There's nothing in that code path which could cause this - except for
altered execution timing. I've seen that warning as well on my Intel HD
Ironlake Mobile (MBP 2010), but only spuriously when plugging/unplugging
an external display into the laptop iirc, so i thought it would be
unrelated.
-mario
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