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kms-impl-device: Clean up state if drm resources disappear

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It may happen that drmModeGetResources() starts returning NULL. Handle
this gracefully by removing all connectors, CRTCs and planes making the
device in practice defunct.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1121


(cherry picked from commit 5319949a45)
This commit is contained in:
Jonas Ådahl
2020-03-11 10:46:48 +00:00
parent a5b5e95ad9
commit 7655a63af6
1 changed files with 10 additions and 0 deletions
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10
src/backends/native/meta-kms-impl-device.c
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@ -326,6 +326,16 @@ meta_kms_impl_device_update_states (MetaKmsImplDevice *impl_device)
meta_assert_in_kms_impl (meta_kms_impl_get_kms (impl_device->impl));
drm_resources = drmModeGetResources (impl_device->fd);
if (!drm_resources)
{
g_list_free_full (impl_device->planes, g_object_unref);
g_list_free_full (impl_device->crtcs, g_object_unref);
g_list_free_full (impl_device->connectors, g_object_unref);
impl_device->planes = NULL;
impl_device->crtcs = NULL;
impl_device->connectors = NULL;
return;
}
update_connectors (impl_device, drm_resources);