isa/mutter
1
0
Fork 0
mirror of https://github.com/brl/mutter.git synced 2024-11-21 15:40:41 -05:00
Code Issues Packages Projects Releases Wiki Activity

kms/connector: Fix updating the state when drmConnector is NULL

Browse Source 
When a docking station is disconnected, a few previously existing DRM
connectors may now be gone. When this happens, getting them via the
libdrm API results in NULL pointers returning, and we need to handle
this gracefully by making sure the connector state is properly updated.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2097>
This commit is contained in:
Jonas Ådahl 2021-11-18 17:15:57 +01:00
parent 989cc2e247
commit 8546ca31ff
1 changed files with 14 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
src/backends/native/meta-kms-connector.c
View File

@ -138,7 +138,9 @@ sync_fd_held (MetaKmsConnector *connector,
{
gboolean should_hold_fd;
should_hold_fd = connector->current_state->current_crtc_id != 0;
should_hold_fd =
connector->current_state &&
connector->current_state->current_crtc_id != 0;
if (connector->fd_held == should_hold_fd)
return;
@ -569,6 +571,13 @@ meta_kms_connector_read_state (MetaKmsConnector *connector,
current_state = g_steal_pointer (&connector->current_state);
changes = META_KMS_UPDATE_CHANGE_NONE;
if (!drm_connector)
{
if (current_state)
changes = META_KMS_UPDATE_CHANGE_FULL;
goto out;
}
if (drm_connector->connection != DRM_MODE_CONNECTED)
{
if (drm_connector->connection != connector->connection)
@ -577,7 +586,7 @@ meta_kms_connector_read_state (MetaKmsConnector *connector,
changes |= META_KMS_UPDATE_CHANGE_FULL;
}
return changes;
goto out;
}
state = meta_kms_connector_state_new ();
@ -616,7 +625,7 @@ meta_kms_connector_read_state (MetaKmsConnector *connector,
changes |= connector_changes;
}
if (changes != META_KMS_UPDATE_CHANGE_NONE)
out:
sync_fd_held (connector, impl_device);
return changes;
@ -634,13 +643,10 @@ meta_kms_connector_update_state (MetaKmsConnector *connector,
drm_connector = drmModeGetConnector (meta_kms_impl_device_get_fd (impl_device),
connector->id);
if (!drm_connector)
return META_KMS_UPDATE_CHANGE_FULL;
changes = meta_kms_connector_read_state (connector, impl_device,
drm_connector,
drm_resources);
drmModeFreeConnector (drm_connector);
g_clear_pointer (&drm_connector, drmModeFreeConnector);
return changes;
}