diff options
| author | Charlene Liu <Charlene.Liu@amd.com> | 2025-09-29 20:29:30 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-10-21 09:50:27 -0400 |
| commit | bec947cbe9a65783adb475a5fb47980d7b4f4796 (patch) | |
| tree | 38296c90c007f449704c58d7648ea13e6d13349e /drivers/gpu/drm/amd/display/dc/inc/hw/hw_shared.h | |
| parent | drm/amd/display: Fix NULL pointer dereference (diff) | |
| download | linux-bec947cbe9a65783adb475a5fb47980d7b4f4796.tar.gz linux-bec947cbe9a65783adb475a5fb47980d7b4f4796.zip | |
drm/amd/display: increase max link count and fix link->enc NULL pointer access
[why]
1.) dc->links[MAX_LINKS] array size smaller than actual requested.
max_connector + max_dpia + 4 virtual = 14.
increase from 12 to 14.
2.) hw_init() access null LINK_ENC for dpia non display_endpoint.
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Reviewed-by: Chris Park <chris.park@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit d7f5a61e1b04ed87b008c8d327649d184dc5bb45)
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/inc/hw/hw_shared.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/hw/hw_shared.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/hw_shared.h b/drivers/gpu/drm/amd/display/dc/inc/hw/hw_shared.h index 41c76ba9ba56..62a39204fe0b 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw/hw_shared.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw/hw_shared.h @@ -44,7 +44,13 @@ */ #define MAX_PIPES 6 #define MAX_PHANTOM_PIPES (MAX_PIPES / 2) -#define MAX_LINKS (MAX_PIPES * 2 +2) + +#define MAX_DPIA 6 +#define MAX_CONNECTOR 6 +#define MAX_VIRTUAL_LINKS 4 + +#define MAX_LINKS (MAX_DPIA + MAX_CONNECTOR + MAX_VIRTUAL_LINKS) + #define MAX_DIG_LINK_ENCODERS 7 #define MAX_DWB_PIPES 1 #define MAX_HPO_DP2_ENCODERS 4 |