drm_modeset_lock9
Take modeset lock
Arguments
lock
lock to take
ctx
acquire ctx
Overview
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.