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| author | Liviu Dudau <Liviu.Dudau@arm.com> | 2018-02-28 14:11:23 +0000 |
|---|---|---|
| committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2018-06-20 15:30:20 +0100 |
| commit | d67b6a2065076d763c7df626b8c54f16038ad862 (patch) | |
| tree | fb7d98ec56e8a726aa2ea0696c55b6702265729e /drivers/gpu/drm/drm_mode_config.c | |
| parent | b13cc8dd588434e2aec781e6d12224e4c408ac18 (diff) | |
| download | linux-d67b6a2065076d763c7df626b8c54f16038ad862.tar.gz | |
drm: writeback: Add client capability for exposing writeback connectors
Due to the fact that writeback connectors behave in a special way in DRM (they always report being disconnected) we might confuse some userspace. Add a client capability for writeback connectors that will filter them out for clients that don't understand the capability. Changelog: - only accept the capability if the client has already set the DRM_CLIENT_CAP_ATOMIC one. Cc: Sean Paul <seanpaul@chromium.org> Cc: Brian Starkey <brian.starkey@arm.com> Signed-off-by: Liviu Dudau <liviu.dudau@arm.com> Reviewed-by: Eric Anholt <eric@anholt.net> Reviewed-by: Brian Starkey <brian.starkey@arm.com> Link: https://patchwork.freedesktop.org/patch/229038/
Diffstat (limited to 'drivers/gpu/drm/drm_mode_config.c')
| -rw-r--r-- | drivers/gpu/drm/drm_mode_config.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c index e5c653357024..21e353bd3948 100644 --- a/drivers/gpu/drm/drm_mode_config.c +++ b/drivers/gpu/drm/drm_mode_config.c @@ -145,6 +145,11 @@ int drm_mode_getresources(struct drm_device *dev, void *data, count = 0; connector_id = u64_to_user_ptr(card_res->connector_id_ptr); drm_for_each_connector_iter(connector, &conn_iter) { + /* only expose writeback connectors if userspace understands them */ + if (!file_priv->writeback_connectors && + (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK)) + continue; + if (drm_lease_held(file_priv, connector->base.id)) { if (count < card_res->count_connectors && put_user(connector->base.id, connector_id + count)) { |