[SRU][P][PATCH v2 0/2] Call trace occurs when unplugging a HDMI/DP/VGA cable on Dell platforms

[En-Wei Wu]

BugLink: https://bugs.launchpad.net/bugs/2116908

[Impact]
On Dell platforms using either Linux 6.11.0-1021-oem or 6.14.0-1005-oem,
we observed call traces when unplugging a HDMI/DP/VGA cable from an
external monitor.

[Fix]
1. Cherry-pick the following patch from the mainline:

f354556e29f4 drm/amd/display: limit clear_update_flags to dcn32 and
  above

Here is the reference for the full patchset:

Link: https://lore.kernel.org/amd-gfx/20250710212941.630259-7-IVAN.LIPSKI@amd.com/

2. Cherry-pick the other patch, which fixes the patch above:

2d418e4fd9f1 drm/amd/display: Allow DCN301 to clear update flags

[Test Plan]
1. Boot into an Ubuntu OS
2. Connect a HDMI/DP/VGA cable into an external monitor
3. Check whether a call trace appears

[Where problems could occur]
This patch changes the behavior of AMD GPUs with DCN version lower
than 3.2. It might cause regression on these GPUs.

v2: Add fix commit: drm/amd/display: Allow DCN301 to clear update flags

Charlene Liu (1):
  drm/amd/display: limit clear_update_flags to dcn32 and above

Ivan Lipski (1):
  drm/amd/display: Allow DCN301 to clear update flags

 drivers/gpu/drm/amd/display/dc/core/dc.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

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2.43.0