diff options
| author | Simon Ser <contact@emersion.fr> | 2021-04-02 13:22:12 +0200 |
|---|---|---|
| committer | Simon Ser <contact@emersion.fr> | 2021-05-03 12:08:37 +0200 |
| commit | 8f86c82aba8b13e732cfdd6d0e19a7dd48197e43 (patch) | |
| tree | d6ac49e5348281d4f4aaa4459334a3fea3a65bf6 /include/uapi/drm/drm_mode.h | |
| parent | 4aae79f77e3a9c53b225a5b2c35951f568156eee (diff) | |
| download | linux-8f86c82aba8b13e732cfdd6d0e19a7dd48197e43.tar.bz2 | |
drm/connector: demote connector force-probes for non-master clients
Force-probing a connector can be slow and cause flickering. As this
affects the global KMS state, let's make it so only the DRM master
can force-probe a connector.
Non-master DRM clients won't be able to force-probe a connector
anymore. Instead, KMS will perform a regular read-only connector
query.
Signed-off-by: Simon Ser <contact@emersion.fr>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210402112212.5625-1-contact@emersion.fr
Diffstat (limited to 'include/uapi/drm/drm_mode.h')
| -rw-r--r-- | include/uapi/drm/drm_mode.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h index a5e76aa06ad5..9b6722d45f36 100644 --- a/include/uapi/drm/drm_mode.h +++ b/include/uapi/drm/drm_mode.h @@ -413,9 +413,10 @@ enum drm_mode_subconnector { * * **Force-probing a connector** * - * If the @count_modes field is set to zero, the kernel will perform a forced - * probe on the connector to refresh the connector status, modes and EDID. - * A forced-probe can be slow, might cause flickering and the ioctl will block. + * If the @count_modes field is set to zero and the DRM client is the current + * DRM master, the kernel will perform a forced probe on the connector to + * refresh the connector status, modes and EDID. A forced-probe can be slow, + * might cause flickering and the ioctl will block. * * User-space needs to force-probe connectors to ensure their metadata is * up-to-date at startup and after receiving a hot-plug event. User-space |