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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2017-03-23 00:50:42 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2017-03-29 10:14:49 +0300 |
| commit | 5fbef3ee4a28f968e9d0ea97c6dc80388287122b (patch) | |
| tree | 3e4f7976c6f1b38924a91ebc018a6a6dfe105c53 /drivers/gpu/drm/drm_plane.c | |
| parent | 34a2ab5e0689e5174dd50e4a96e73c1c00539fdb (diff) | |
| download | linux-5fbef3ee4a28f968e9d0ea97c6dc80388287122b.tar.xz | |
drm: drm_plane_force_disable is not for atomic drivers
This way I can explain why it'll be fine to pass a NULL acquire ctx
here in the next patch.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322215058.8671-4-daniel.vetter@ffwll.ch
Diffstat (limited to 'drivers/gpu/drm/drm_plane.c')
| -rw-r--r-- | drivers/gpu/drm/drm_plane.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index 8a4e75929810..67119332c441 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -277,6 +277,12 @@ EXPORT_SYMBOL(drm_plane_from_index); * * Used when the plane's current framebuffer is destroyed, * and when restoring fbdev mode. + * + * Note that this function is not suitable for atomic drivers, since it doesn't + * wire through the lock acquisition context properly and hence can't handle + * retries or driver private locks. You probably want to use + * drm_atomic_helper_disable_plane() or + * drm_atomic_helper_disable_planes_on_crtc() instead. */ void drm_plane_force_disable(struct drm_plane *plane) { @@ -285,6 +291,8 @@ void drm_plane_force_disable(struct drm_plane *plane) if (!plane->fb) return; + WARN_ON(drm_drv_uses_atomic_modeset(plane->dev)); + plane->old_fb = plane->fb; ret = plane->funcs->disable_plane(plane); if (ret) { |