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drm/amd/display: Skip updating link encoder for unknown eng_id

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This prevents accessing to negative index of link_encoders array.

This fixes an OVERRUN issue reported by Coverity.

Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Hung 2024-04-22 10:34:17 -06:00 committed by Alex Deucher
parent b38a4815f7
commit efabdce3db
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/dc/link/link_factory.c
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@ -390,7 +390,7 @@ static void link_destruct(struct dc_link *link)
* the dynamic assignment of link encoders to streams. Virtual links
* are not assigned encoder resources on creation.
*/
if (link->link_id.id != CONNECTOR_ID_VIRTUAL) {
if (link->link_id.id != CONNECTOR_ID_VIRTUAL && link->eng_id != ENGINE_ID_UNKNOWN) {
link->dc->res_pool->link_encoders[link->eng_id - ENGINE_ID_DIGA] = NULL;
link->dc->res_pool->dig_link_enc_count--;
}