[Intel-gfx] [git pull] i915 fixes

[Dave Airlie]

On Tue, Mar 8, 2011 at 7:28 AM, Jim Gettys <jg at freedesktop.org> wrote:
> On 03/07/2011 07:00 AM, Chris Wilson wrote:
>>
>> Dave, hopefully this completes the regression fixes for .38. There is
>> still some doubt over eDP, with 011b9910bdaf failing for Jim Gettys but
>> seeming required for other (currently working in .37) machines. And
>> despite Linus's intervention, backlight controls are still broken for some
>> users.
>
> FWIW:
>
> The failure is not so common for me as to claim the change should not go in;
> and my work around is to suspend/resume the system again.

The thing with this patch is the only think I can think it could do
different on your system is timing related.

I'm a bit worried that I haven't seen much attempt at debugging this
from the Intel folks,
since its an 80 line patch it really wouldn't harm if they could
suggest something.

It might be interetsing to print out the is_pch_port to make sure it
never changes,
and also to see if bypassing the whole new code section added in to
turn off the CPU FDI and PCH FDI
helps at all.

Dave.