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(parent: 5c50716) | patch
drm/dp/mst: take lock around looking up the branch device on hpd irq
authorDave Airlie <airlied@redhat.com>
Mon, 22 Jun 2015 04:40:44 +0000 (14:40 +1000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 3 Aug 2015 16:29:08 +0000 (09:29 -0700)
commite60bd2d701a57d0cd9fe53de5e1426af03874c0d
tree7f7789f591bce3f0d4cac9aa25475dd89526e0f0tree
parent5c507167d2ef467ecd2ec4ad40a0bd70b4fad814commit | diff
drm/dp/mst: take lock around looking up the branch device on hpd irq

commit 9eb1e57f564d4e6e10991402726cc83fe0b9172f upstream.

If we are doing an MST transaction and we've gotten HPD and we
lookup the device from the incoming msg, we should take the mgr
lock around it, so that mst_primary and mstb->ports are valid.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/gpu/drm/drm_dp_mst_topology.c diff | blob | history
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