[SRU][M][PATCH 0/1] The display becomes frozen after some time when a HDMI device is connected

[Roxana Nicolescu]

BugLink: https://bugs.launchpad.net/bugs/2049027

SRU Justification:

[Impact]

Multiple users have reported frozen displays when external HDMI device
is connected on systems with intel graphics chipsets.

[Fix]

* backport 49e0a85ec344: "drm/i915/dmc: Don't enable any pipe DMC events"
from 6.6.9

[Test Plan]

* Tested on Intel TigerLake with iris Xe Graphics and no issues so far.
It seems it affects mostly Alder Lake though, but at least it does not
cause any issues on other models.
* It has also been tested upstream https://gitlab.freedesktop.org/drm/intel/-/issues/8685

[Where problems could occur]
* We could see issues on systems with Intel Graphics when HDMI devices
are connected during power state changes.

Ville Syrjälä (1):
  drm/i915/dmc: Don't enable any pipe DMC events

 drivers/gpu/drm/i915/display/intel_dmc.c | 43 ++++++++++++++++++++++--
 1 file changed, 41 insertions(+), 2 deletions(-)

-- 
2.34.1