[SRU] [Bionic] [PATCH 0/1] Urgent fix for docking station

[Kai-Heng Feng]

BugLink: https://bugs.launchpad.net/bugs/1813663

[Impact]
Once -44 -generic kernel lands -updates, i915 stops working when using
docking station's MST DP:
[ 378.105226] BUG: unable to handle kernel NULL pointer dereference at 0000000000000245
[ 378.105296] IP: intel_ddi_post_disable+0x54/0x170 [i915]

[Fix]
Revert "drm/i915/dp: Send DPCD ON for MST before phy_up".

[Test]
User confirmed reverting the commit can fix the issue.

[Regression Potential]
Low. If this commit is important then we need to also backport its
dependencies.

Kai-Heng Feng (1):
  Revert "drm/i915/dp: Send DPCD ON for MST before phy_up"

 drivers/gpu/drm/i915/intel_ddi.c    | 8 ++------
 drivers/gpu/drm/i915/intel_dp_mst.c | 5 -----
 2 files changed, 2 insertions(+), 11 deletions(-)

-- 
2.17.1