tree 16861beb9f0acb861ac7e1d571df9ddb098abff3
parent 8c4ccc4ab6f64e859d4ff8d7c02c2ed2e956e07f
author Daniel Vetter <daniel.vetter@ffwll.ch> 1436478267 +0200
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1437575145 +0200

drm/fbdev-helper: Grab mode_config.mutex in drm_fb_helper_single_add_all_connectors

This is now truly only duct-tape to keep locking checks happy since
calling this function when hpd or polling are already enabled is a
bug. The fbdev helper can't cope with hotplug changes yet at this
point, only after that.

Otoh a bit more robustness in this function can't hurt, and with this
fbdev can actually cope with hotplug changes. And it's also more
consistent with the connector hotadd/remove dp mst needs to do.
Therefore document this as new official behavior.

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>