5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Hung <alex.hung@xxxxxxx>
[ 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@xxxxxxx>
Acked-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>
Signed-off-by: Alex Hung <alex.hung@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index b821abb56ac3b..333be05418935 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2431,7 +2431,8 @@ static int dm_suspend(void *handle)
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);
@@ -6884,7 +6885,8 @@ static void create_eml_sink(struct amdgpu_dm_connector *aconnector)
aconnector->dc_sink = aconnector->dc_link->local_sink ?
aconnector->dc_link->local_sink :
aconnector->dc_em_sink;
- dc_sink_retain(aconnector->dc_sink);
+ if (aconnector->dc_sink)
+ dc_sink_retain(aconnector->dc_sink);
}
}
@@ -8218,7 +8220,8 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector)
drm_add_modes_noedid(connector, 640, 480);
} else {
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_fbc_init(connector);
--
2.43.0
