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

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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>

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Daniel Vetter 2015-07-09 23:44:27 +02:00

parent 8c4ccc4ab6

commit 169faecadd

1 changed files with 7 additions and 2 deletions

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drivers/gpu/drm/drm_fb_helper.c

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