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drm/amd/display: Add null checker before passing variables

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[ Upstream commit 8092aa3ab8f7b737a34b71f91492c676a843043a ]

Checks null pointer before passing variables to functions.

This fixes 3 NULL_RETURNS issues reported by Coverity.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Alex Hung
2024-06-04 16:33:18 -06:00
committed by Greg Kroah-Hartman
parent bf33a29f7a
commit 83c7f509ef
1 changed files with 6 additions and 3 deletions
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9
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -2636,7 +2636,8 @@ static int dm_suspend(void *handle)
dm->cached_dc_state = dc_copy_state(dm->dc->current_state); dm->cached_dc_state = dc_copy_state(dm->dc->current_state);
dm_gpureset_toggle_interrupts(adev, dm->cached_dc_state, false); if (dm->cached_dc_state)
dm_gpureset_toggle_interrupts(adev, dm->cached_dc_state, false);
amdgpu_dm_commit_zero_streams(dm->dc); amdgpu_dm_commit_zero_streams(dm->dc);
@@ -6388,7 +6389,8 @@ static void create_eml_sink(struct amdgpu_dm_connector *aconnector)
aconnector->dc_sink = aconnector->dc_link->local_sink ? aconnector->dc_sink = aconnector->dc_link->local_sink ?
aconnector->dc_link->local_sink : aconnector->dc_link->local_sink :
aconnector->dc_em_sink; aconnector->dc_em_sink;
dc_sink_retain(aconnector->dc_sink); if (aconnector->dc_sink)
dc_sink_retain(aconnector->dc_sink);
} }
} }
@@ -7121,7 +7123,8 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector)
drm_add_modes_noedid(connector, 640, 480); drm_add_modes_noedid(connector, 640, 480);
} else { } else {
amdgpu_dm_connector_ddc_get_modes(connector, edid); amdgpu_dm_connector_ddc_get_modes(connector, edid);
amdgpu_dm_connector_add_common_modes(encoder, connector); if (encoder)
amdgpu_dm_connector_add_common_modes(encoder, connector);
amdgpu_dm_connector_add_freesync_modes(connector, edid); amdgpu_dm_connector_add_freesync_modes(connector, edid);
} }
amdgpu_dm_fbc_init(connector); amdgpu_dm_fbc_init(connector);