Commit 7c8fb3b8 authored by Srinivasan Shanmugam's avatar Srinivasan Shanmugam Committed by Alex Deucher
Browse files

drm/amd/display: Add hpd_source index check for DCE60/80/100/110/112/120 link encoders 



This patch adds a boundary check for the hpd_source index during the
link encoder creation process for all DCExxx IP's. The check ensures
that the index is within the valid range of the link_enc_hpd_regs array
to prevent out-of-bounds access.

Cc: Tom Chung <chiahsuan.chung@amd.com>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Cc: Roman Li <roman.li@amd.com>
Cc: Alex Hung <alex.hung@amd.com>
Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: default avatarSrinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: default avatarRoman Li <roman.li@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 785504dd

drivers/gpu/drm/amd/display/dc/dce60/dce60_resource.c

+1 −1
Original line number Diff line number Diff line
@@ -717,7 +717,7 @@ static struct link_encoder *dce60_link_encoder_create( 
		kzalloc(sizeof(struct dce110_link_encoder), GFP_KERNEL);

	int link_regs_id;



	if (!enc110)

	if (!enc110 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs))

		return NULL;



	link_regs_id =

drivers/gpu/drm/amd/display/dc/resource/dce100/dce100_resource.c

+1 −1
Original line number Diff line number Diff line
@@ -623,7 +623,7 @@ static struct link_encoder *dce100_link_encoder_create( 
		kzalloc(sizeof(struct dce110_link_encoder), GFP_KERNEL);

	int link_regs_id;



	if (!enc110)

	if (!enc110 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs))

		return NULL;



	link_regs_id =

drivers/gpu/drm/amd/display/dc/resource/dce110/dce110_resource.c

+1 −1
Original line number Diff line number Diff line
@@ -668,7 +668,7 @@ static struct link_encoder *dce110_link_encoder_create( 
		kzalloc(sizeof(struct dce110_link_encoder), GFP_KERNEL);

	int link_regs_id;



	if (!enc110)

	if (!enc110 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs))

		return NULL;



	link_regs_id =

drivers/gpu/drm/amd/display/dc/resource/dce112/dce112_resource.c

+1 −1
Original line number Diff line number Diff line
@@ -629,7 +629,7 @@ static struct link_encoder *dce112_link_encoder_create( 
		kzalloc(sizeof(struct dce110_link_encoder), GFP_KERNEL);

	int link_regs_id;



	if (!enc110)

	if (!enc110 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs))

		return NULL;



	link_regs_id =

drivers/gpu/drm/amd/display/dc/resource/dce120/dce120_resource.c

+1 −1
Original line number Diff line number Diff line
@@ -706,7 +706,7 @@ static struct link_encoder *dce120_link_encoder_create( 
		kzalloc(sizeof(struct dce110_link_encoder), GFP_KERNEL);

	int link_regs_id;



	if (!enc110)

	if (!enc110 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs))

		return NULL;



	link_regs_id =