[PATCH] drm/radeon: Fix oops upon driver load on PowerXpress laptops

[Lukas Wunner]

On Mon, May 22, 2017 at 03:35:48PM -0400, Sean Paul wrote:
> On Mon, May 22, 2017 at 04:04:07PM +0200, Lukas Wunner wrote:
> > On Sun, May 21, 2017 at 09:31:09AM +0200, Nicolai Stange wrote:
> > > On Thu, May 18 2017, Lukas Wunner wrote:
> > [snip]
> > > > Reported-by: Nicolai Stange <nicstange at gmail.com>
> > > > Fixes: 7ffb0ce31cf9 ("drm/radeon: Don't register Thunderbolt eGPU with vga_switcheroo")
> > > > Signed-off-by: Lukas Wunner <lukas at wunner.de>
> > > > ---
> > > >
> > > > Awaiting a Tested-by: from Nicolai, but it's clear this is a bug and
> > > > needs to be fixed, so sending out with a proper commit message now.
> > > > The bug was only introduced to radeon, not amdgpu.
> > > 
> > > Tested-by: Nicolai Stange <nicstange at gmail.com>
> > > 
> > > Thanks for the quick fix!
> > >
> > > > @Alex Deucher: I could push this to drm-misc-fixes but then it wouldn't
> > > > land before -rc3 because Sean Paul has already sent out the -rc2 pull.
> > > > I notice you haven't sent out a pull for -rc2 yet, so maybe you want to
> > > > take it yourself?  Whichever you prefer.  Thanks & sorry for the breakage!
> > 
> > I've learned this morning that Alex is on vacation.  I've pushed
> > the patch to drm-misc-fixes so that the issue is fixed in 4.12-rc3.
> > 
> > @Sean Paul: I've fast-forwarded to 4.12-rc2 before pushing, please
> > shout if I've done anything wrong.  First time I'm doing this.
> 
> No shouting, but a heads-up on IRC is probably warranted for both pushing a
> patch without R-b and fast-forwarding one of the branches.

Thanks, noted.  I'm not paid for work on the DRM subsystem, so I have to
do this during breaks at $DAYJOB where I have no access to IRC, but I will
ask via e-mail in the future before going out on a limb.

Not being able to dedicate my full attention to this all the time is also
the reason why it's hard for me to get the timing perfect:  I had already
submitted a fix before you sent out your -rc2 pull and I would have hated
missing another rc cycle, yet wasn't sure when exactly you were going to
send out your -rc3 pull this week and whether I would be able to carve out
enough time to push the patch before that date without hurriedly making
major mistakes.

Kind regards,

Lukas