drm: fix fb-helper vs MST dangling connector ptrs (v2)

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commit 2148f18fdb upstream.

VT switch back/forth from console to xserver (for example) has potential
to go horribly wrong if a dynamic DP MST connector ends up in the saved
modeset that is restored when switching back to fbcon.

When removing a dynamic connector, don't forget to clean up the saved
state.

v1: original
v2: null out set->fb if no more connectors to avoid making i915 cranky

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1184968
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Rob Clark 2015-01-26 10:11:08 -05:00 • committed by Greg Kroah-Hartman

parent f1d5aa4663

commit e63fea1633

1 changed files with 30 additions and 0 deletions

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drivers/gpu/drm/drm_fb_helper.c

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