[git pull] drm fixes (regression special)

[git pull] drm fixes (regression special)

[Dave Airlie]

Hey Linus,

We interrupt your regularly scheduled drm fixes for a regression special.

The first is for a fix in i915 that had unexpected side effects
fallout in the userspace X.org modesetting driver where X would no
longer start. I got tired of the nitpicking and issued a large hammer
on it. The X.org driver is buggy, but blackscreen regressions are
worse.

The second was an oversight that myself and Gerd should have noticed
better, Gerd is trying to fix this properly, but the regression is too
large to leave, even if the original behaviour is bad in some cases,
it's clearly bad to break a bunch of working use cases.

I'll likely have a regular fixes pull later, but I really wanted to
highlight these.

Dave.

drm-fixes-2019-04-24:
drm regression fixes (i915 and virtio-gpu)
The following changes since commit 085b7755808aa11f78ab9377257e1dad2e6fa4bb:

  Linux 5.1-rc6 (2019-04-21 10:45:57 -0700)

are available in the Git repository at:

  git://anongit.freedesktop.org/drm/drm tags/drm-fixes-2019-04-24

for you to fetch changes up to a0cecc23cfcbf2626497a8c8770856dd56b67917:

  Revert "drm/virtio: drop prime import/export callbacks" (2019-04-24
10:52:52 +1000)

----------------------------------------------------------------
drm regression fixes (i915 and virtio-gpu)

----------------------------------------------------------------
Dave Airlie (2):
      Revert "drm/i915/fbdev: Actually configure untiled displays"
      Revert "drm/virtio: drop prime import/export callbacks"

 drivers/gpu/drm/i915/intel_fbdev.c     | 12 +++++-------
 drivers/gpu/drm/virtio/virtgpu_drv.c   |  4 ++++
 drivers/gpu/drm/virtio/virtgpu_drv.h   |  4 ++++
 drivers/gpu/drm/virtio/virtgpu_prime.c | 12 ++++++++++++
 4 files changed, 25 insertions(+), 7 deletions(-)

Re: [git pull] drm fixes (regression special)

[pr-tracker-bot]

The pull request you sent on Wed, 24 Apr 2019 11:21:44 +1000:

> git://anongit.freedesktop.org/drm/drm tags/drm-fixes-2019-04-24

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/ba25b50d582ff6c6021eee80824134aeb9ab8785

Thank you!

-- 
Deet-doot-dot, I am a bot.
https://korg.wiki.kernel.org/userdoc/prtracker

Re: [git pull] drm fixes (regression special)

[Daniel Vetter]

On Wed, Apr 24, 2019 at 3:21 AM Dave Airlie <airlied@gmail.com> wrote:
>
> Hey Linus,
>
> We interrupt your regularly scheduled drm fixes for a regression special.
>
> The first is for a fix in i915 that had unexpected side effects
> fallout in the userspace X.org modesetting driver where X would no
> longer start. I got tired of the nitpicking and issued a large hammer
> on it. The X.org driver is buggy, but blackscreen regressions are
> worse.
>
> The second was an oversight that myself and Gerd should have noticed
> better, Gerd is trying to fix this properly, but the regression is too
> large to leave, even if the original behaviour is bad in some cases,
> it's clearly bad to break a bunch of working use cases.
>
> I'll likely have a regular fixes pull later, but I really wanted to
> highlight these.
>
> Dave.
>
> drm-fixes-2019-04-24:
> drm regression fixes (i915 and virtio-gpu)
> The following changes since commit 085b7755808aa11f78ab9377257e1dad2e6fa4bb:
>
>   Linux 5.1-rc6 (2019-04-21 10:45:57 -0700)
>
> are available in the Git repository at:
>
>   git://anongit.freedesktop.org/drm/drm tags/drm-fixes-2019-04-24
>
> for you to fetch changes up to a0cecc23cfcbf2626497a8c8770856dd56b67917:
>
>   Revert "drm/virtio: drop prime import/export callbacks" (2019-04-24
> 10:52:52 +1000)
>
> ----------------------------------------------------------------
> drm regression fixes (i915 and virtio-gpu)
>
> ----------------------------------------------------------------
> Dave Airlie (2):
>       Revert "drm/i915/fbdev: Actually configure untiled displays"

This will conflict badly with the refactor in drm-next:

commit 09ded8af57bcef7287b8242087d3e7556380de62
Author: Noralf Trønnes <noralf@tronnes.org>
Date:   Sun Apr 7 18:52:34 2019 +0200

    drm/i915/fbdev: Move intel_fb_initial_config() to fbdev helper

Probably best if we cherry-pick the revert over to avoid accidentally
reintroducing this regression in the next merge window? Since the code
moved I think a backmerge is to non-obvious about what's going on ...
Adding Noralf.
-Daniel

>       Revert "drm/virtio: drop prime import/export callbacks"
>
>  drivers/gpu/drm/i915/intel_fbdev.c     | 12 +++++-------
>  drivers/gpu/drm/virtio/virtgpu_drv.c   |  4 ++++
>  drivers/gpu/drm/virtio/virtgpu_drv.h   |  4 ++++
>  drivers/gpu/drm/virtio/virtgpu_prime.c | 12 ++++++++++++
>  4 files changed, 25 insertions(+), 7 deletions(-)



-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch