| Message ID | 20241211230328.4012496-7-imre.deak@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/connector: Expose only a properly inited connector | expand |
On Thu, 12 Dec 2024, Imre Deak <imre.deak@intel.com> wrote: > After a connector is added to the drm_mode_config::connector_list, it's > visible to any in-kernel users looking up connectors via the above list. > Make sure that the connector is properly initialized before such > look-ups, by initializing the connector with > drm_connector_dynamic_register() - which doesn't add the connector to > the list - and registering it with drm_connector_dynamic_register() - > which adds the connector to the list - after the initialization is > complete. > > Cc: Harry Wentland <harry.wentland@amd.com> > Cc: Leo Li <sunpeng.li@amd.com> > Cc: Wayne Lin <wayne.lin@amd.com> > Cc: Alex Deucher <alexander.deucher@amd.com> > Cc: Lyude Paul <lyude@redhat.com> > Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> > --- > drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c > index 6e43594906130..d398bc74e6677 100644 > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c > @@ -590,11 +590,12 @@ dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr, > amdgpu_dm_set_mst_status(&aconnector->mst_status, > MST_PROBE, true); > > - if (drm_connector_init( > + if (drm_connector_dynamic_init( > dev, > connector, > &dm_dp_mst_connector_funcs, > - DRM_MODE_CONNECTOR_DisplayPort)) { > + DRM_MODE_CONNECTOR_DisplayPort, > + NULL)) { > kfree(aconnector); > return NULL; > }
Hi Harry, Leo, Alex, Wayne, could you please ack this change as well? Thanks, Imre A typo below in the commit log, can fix it while merging the patch here and in the i915/nouveau patches. On Thu, Dec 12, 2024 at 01:03:23AM +0200, Imre Deak wrote: > After a connector is added to the drm_mode_config::connector_list, it's > visible to any in-kernel users looking up connectors via the above list. > Make sure that the connector is properly initialized before such > look-ups, by initializing the connector with > drm_connector_dynamic_register() - which doesn't add the connector to ^ should be drm_connector_dynamic_init() > the list - and registering it with drm_connector_dynamic_register() - > which adds the connector to the list - after the initialization is > complete. > > Cc: Harry Wentland <harry.wentland@amd.com> > Cc: Leo Li <sunpeng.li@amd.com> > Cc: Wayne Lin <wayne.lin@amd.com> > Cc: Alex Deucher <alexander.deucher@amd.com> > Cc: Lyude Paul <lyude@redhat.com> > Signed-off-by: Imre Deak <imre.deak@intel.com> > --- > drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c > index 6e43594906130..d398bc74e6677 100644 > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c > @@ -590,11 +590,12 @@ dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr, > amdgpu_dm_set_mst_status(&aconnector->mst_status, > MST_PROBE, true); > > - if (drm_connector_init( > + if (drm_connector_dynamic_init( > dev, > connector, > &dm_dp_mst_connector_funcs, > - DRM_MODE_CONNECTOR_DisplayPort)) { > + DRM_MODE_CONNECTOR_DisplayPort, > + NULL)) { > kfree(aconnector); > return NULL; > } > -- > 2.44.2 >
On Mon, Dec 16, 2024 at 8:13 AM Imre Deak <imre.deak@intel.com> wrote: > > Hi Harry, Leo, Alex, Wayne, > > could you please ack this change as well? Patches 1-9 are: Acked-by: Alex Deucher <alexander.deucher@amd.com> Feel free to take this one through whichever tree you are planning to commit these to. Alex > > Thanks, > Imre > > A typo below in the commit log, can fix it while merging the patch here and in > the i915/nouveau patches. > > On Thu, Dec 12, 2024 at 01:03:23AM +0200, Imre Deak wrote: > > After a connector is added to the drm_mode_config::connector_list, it's > > visible to any in-kernel users looking up connectors via the above list. > > Make sure that the connector is properly initialized before such > > look-ups, by initializing the connector with > > drm_connector_dynamic_register() - which doesn't add the connector to > ^ should be drm_connector_dynamic_init() > > > the list - and registering it with drm_connector_dynamic_register() - > > which adds the connector to the list - after the initialization is > > complete. > > > > Cc: Harry Wentland <harry.wentland@amd.com> > > Cc: Leo Li <sunpeng.li@amd.com> > > Cc: Wayne Lin <wayne.lin@amd.com> > > Cc: Alex Deucher <alexander.deucher@amd.com> > > Cc: Lyude Paul <lyude@redhat.com> > > Signed-off-by: Imre Deak <imre.deak@intel.com> > > --- > > drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 5 +++-- > > 1 file changed, 3 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c > > index 6e43594906130..d398bc74e6677 100644 > > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c > > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c > > @@ -590,11 +590,12 @@ dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr, > > amdgpu_dm_set_mst_status(&aconnector->mst_status, > > MST_PROBE, true); > > > > - if (drm_connector_init( > > + if (drm_connector_dynamic_init( > > dev, > > connector, > > &dm_dp_mst_connector_funcs, > > - DRM_MODE_CONNECTOR_DisplayPort)) { > > + DRM_MODE_CONNECTOR_DisplayPort, > > + NULL)) { > > kfree(aconnector); > > return NULL; > > } > > -- > > 2.44.2 > >
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 6e43594906130..d398bc74e6677 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -590,11 +590,12 @@ dm_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr, amdgpu_dm_set_mst_status(&aconnector->mst_status, MST_PROBE, true); - if (drm_connector_init( + if (drm_connector_dynamic_init( dev, connector, &dm_dp_mst_connector_funcs, - DRM_MODE_CONNECTOR_DisplayPort)) { + DRM_MODE_CONNECTOR_DisplayPort, + NULL)) { kfree(aconnector); return NULL; }
After a connector is added to the drm_mode_config::connector_list, it's visible to any in-kernel users looking up connectors via the above list. Make sure that the connector is properly initialized before such look-ups, by initializing the connector with drm_connector_dynamic_register() - which doesn't add the connector to the list - and registering it with drm_connector_dynamic_register() - which adds the connector to the list - after the initialization is complete. Cc: Harry Wentland <harry.wentland@amd.com> Cc: Leo Li <sunpeng.li@amd.com> Cc: Wayne Lin <wayne.lin@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Lyude Paul <lyude@redhat.com> Signed-off-by: Imre Deak <imre.deak@intel.com> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)