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| author | Mario Limonciello <[email protected]> | 2025-04-04 14:34:52 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2025-04-22 20:48:44 +0000 |
| commit | 870bea21fdf88f45c94c0a3dbb0e3cc1b219680f (patch) | |
| tree | 154413345caaa77f6b29e0d6e72070bb4260a193 /drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | |
| parent | drm/amdgpu: Allow P2P access through XGMI (diff) | |
| download | kernel-870bea21fdf88f45c94c0a3dbb0e3cc1b219680f.tar.gz kernel-870bea21fdf88f45c94c0a3dbb0e3cc1b219680f.zip | |
drm/amd/display: Fix ACPI edid parsing on some Lenovo systems
[Why]
The ACPI EDID in the BIOS of a Lenovo laptop includes 3 blocks, but
dm_helpers_probe_acpi_edid() has a start that is 'char'. The 3rd
block index starts after 255, so it can't be indexed properly.
This leads to problems with the display when the EDID is parsed.
[How]
Change the variable type to 'short' so that larger values can be indexed.
Cc: Renjith Pananchikkal <[email protected]>
Reported-by: Mark Pearson <[email protected]>
Suggested-by: David Ober <[email protected]>
Fixes: c6a837088bed ("drm/amd/display: Fetch the EDID from _DDC if available for eDP")
Reviewed-by: Alex Hung <[email protected]>
Signed-off-by: Mario Limonciello <[email protected]>
Signed-off-by: Zaeem Mohamed <[email protected]>
Tested-by: Mark Broadworth <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
(cherry picked from commit a918bb4a90d423ced2976a794f2724c362c1f063)
Cc: [email protected]
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
0 files changed, 0 insertions, 0 deletions