Take modeset lock
int drm_modeset_lock(struct drm_modeset_lock * lock, struct drm_modeset_acquire_ctx * ctx);
lock
lock to take
ctx
acquire ctx
If ctx is not NULL, then its ww acquire context is used and the lock will be tracked by the context and can be released by calling drm_modeset_drop_locks. If -EDEADLK is returned, this means a deadlock scenario has been detected and it is an error to attempt to take any more locks without first calling drm_modeset_backoff.
Jesse Barnes <[email protected]>
Intel Corporation,
Initial version
Laurent Pinchart <[email protected]>
Ideas on board SPRL,
Driver internals
Daniel Vetter <[email protected]>
Intel Corporation,
Contributions all over the place