diff options
| author |   Mario Limonciello <mario.limonciello@amd.com> | 2021-12-10 09:45:23 -0600 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2021-12-13 16:33:16 -0500 |
| commit | 4fe3819443a13f8ecf11f53559ada5711dd8d4b1 (patch) | |
| tree | bbd0a5afadaa240337493e63c68669358d0eb95b | |
| parent | drm/amdgpu: Reduce SG bo memory usage for mGPUs (diff) | |
| download | wireguard-linux-4fe3819443a13f8ecf11f53559ada5711dd8d4b1.tar.xz wireguard-linux-4fe3819443a13f8ecf11f53559ada5711dd8d4b1.zip | |
drm/amd: add some extra checks that is_dig_enabled is defined
There are a few places that this isn't checked that could potentially
be a NULL pointer access.
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 21 |
2 files changed, 12 insertions, 12 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c index ac2d4c4f04e4..8653b4b8bcfc 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c @@ -77,7 +77,8 @@ int rn_get_active_display_cnt_wa( const struct dc_link *link = dc->links[i]; /* abusing the fact that the dig and phy are coupled to see if the phy is enabled */ - if (link->link_enc->funcs->is_dig_enabled(link->link_enc)) + if (link->link_enc->funcs->is_dig_enabled && + link->link_enc->funcs->is_dig_enabled(link->link_enc)) display_count++; } diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c index abef132fa016..0d6dc329dddb 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c @@ -1827,17 +1827,16 @@ void dce110_enable_accelerated_mode(struct dc *dc, struct dc_state *context) if (edp_link != edp_streams[0]->link) continue; // enable fastboot if backend is enabled on eDP - if (edp_link->link_enc->funcs->is_dig_enabled(edp_link->link_enc)) { - /* Set optimization flag on eDP stream*/ - if (edp_link->link_status.link_active) { - edp_stream = edp_streams[0]; - can_apply_edp_fast_boot = !is_edp_ilr_optimization_required(edp_stream->link, &edp_stream->timing); - edp_stream->apply_edp_fast_boot_optimization = can_apply_edp_fast_boot; - if (can_apply_edp_fast_boot) - DC_LOG_EVENT_LINK_TRAINING("eDP fast boot disabled to optimize link rate\n"); - - break; - } + if (edp_link->link_enc->funcs->is_dig_enabled && + edp_link->link_enc->funcs->is_dig_enabled(edp_link->link_enc) && + edp_link->link_status.link_active) { + edp_stream = edp_streams[0]; + can_apply_edp_fast_boot = !is_edp_ilr_optimization_required(edp_stream->link, &edp_stream->timing); + edp_stream->apply_edp_fast_boot_optimization = can_apply_edp_fast_boot; + if (can_apply_edp_fast_boot) + DC_LOG_EVENT_LINK_TRAINING("eDP fast boot disabled to optimize link rate\n"); + + break; } } // We are trying to enable eDP, don't power down VDD |