diff options
| author | Srinivasan Shanmugam <srinivasan.shanmugam@amd.com> | 2024-10-15 20:42:39 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-10-22 17:50:12 -0400 |
| commit | 40d7299c72666e0ec21426ded2a5c8abec36c35b (patch) | |
| tree | c3c428f423a6b95cbc9faac2597d624ca1c0dba8 | |
| parent | df9174ef4a7cbb162891ea4dc1252a451bc05772 (diff) | |
drm/amd/display: Ensure HPD source index is valid for dcn20/dcn201 link encoders
This patch adds a boundary check for the hpd_source index during the
link encoder creation process for dcn20/dcn201 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: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Roman Li <roman.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/resource/dcn20/dcn20_resource.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/resource/dcn201/dcn201_resource.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn20/dcn20_resource.c index eea2b3b307cd..288189913e1e 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn20/dcn20_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn20/dcn20_resource.c @@ -920,7 +920,7 @@ struct link_encoder *dcn20_link_encoder_create( kzalloc(sizeof(struct dcn20_link_encoder), GFP_KERNEL); int link_regs_id; - if (!enc20) + if (!enc20 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs)) return NULL; link_regs_id = diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn201/dcn201_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn201/dcn201_resource.c index fc54483b9104..15180ad71513 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn201/dcn201_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn201/dcn201_resource.c @@ -797,7 +797,7 @@ static struct link_encoder *dcn201_link_encoder_create( kzalloc(sizeof(struct dcn20_link_encoder), GFP_ATOMIC); struct dcn10_link_encoder *enc10; - if (!enc20) + if (!enc20 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs)) return NULL; enc10 = &enc20->enc10; |