Commit 89b00822 authored by Aurabindo Pillai's avatar Aurabindo Pillai Committed by Alex Deucher
Browse files

drm/amd/display: Check correct bounds for stream encoder instances for DCN303 



[Why & How]
eng_id for DCN303 cannot be more than 1, since we have only two
instances of stream encoders.

Check the correct boundary condition for engine ID for DCN303 prevent
the potential out of bounds access.

Fixes: cd6d421e ("drm/amd/display: Initial DC support for Beige Goby")
Reported-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Cc: stable@vger.kernel.org
Reviewed-by: default avatarChris Park <Chris.Park@amd.com>
Reviewed-by: default avatarRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: default avatarTom Chung <chiahsuan.chung@amd.com>
Signed-off-by: default avatarAurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 6396679a

drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c

+1 −1
Original line number Diff line number Diff line
@@ -372,7 +372,7 @@ static struct stream_encoder *dcn303_stream_encoder_create(enum engine_id eng_id 
	int afmt_inst;



	/* Mapping of VPG, AFMT, DME register blocks to DIO block instance */

	if (eng_id <= ENGINE_ID_DIGE) {

	if (eng_id <= ENGINE_ID_DIGB) {

		vpg_inst = eng_id;

		afmt_inst = eng_id;

	} else