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| author | Mario Limonciello <mario.limonciello@amd.com> | 2025-04-04 09:34:52 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-04-22 08:51:44 -0400 |
| commit | a918bb4a90d423ced2976a794f2724c362c1f063 (patch) | |
| tree | c1fa1617049ea18cab6be3488239202dbe8f2edd /drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c | |
| parent | ce2e117bfb95f5b4fe4dc08100c23e3027fb3a01 (diff) | |
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 <renjith.pananchikkal@amd.com>
Reported-by: Mark Pearson <mpearson@lenovo.com>
Suggested-by: David Ober <dober@lenovo.com>
Fixes: c6a837088bed ("drm/amd/display: Fetch the EDID from _DDC if available for eDP")
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c')
0 files changed, 0 insertions, 0 deletions