drm/i915: only hook up hpd pulse for DP outputs
authorChris Wilson <chris@chris-wilson.co.uk>
Mon, 4 Aug 2014 06:15:09 +0000 (07:15 +0100)
committerDave Airlie <airlied@redhat.com>
Mon, 4 Aug 2014 06:31:29 +0000 (16:31 +1000)
commitf68d697eaf3278200a7fc3c8b1d95d72837b84d8
tree3a792d4a40cd3e5c784fca55a66bff31065dca04
parent1fae6dfeb63cddea9b9cd19f236c40f73c72f61d
drm/i915: only hook up hpd pulse for DP outputs

On HSW+, the digital encoders are shared between HDMI and DP outputs,
with one encoder masquerading as both. The VBT should tell us if we need
to have DP or HDMI support on a particular port, but if we don't have DP
support and we enable the DP hpd pulse handler then we cause an oops.

Don't hook up the DP hpd handling if we don't have a DP port.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81856
Reported-by: Intel QA Team.
Signed-off-by: Dave Airlie <airlied@redhat.com> # v1
[ickle: Fix the error handling after a malloc failure]
Reviewed-by: Dave Airlie <airlied@redhat.com>
Cc: Paulo Zanoni <przanoni@gmail.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
drivers/gpu/drm/i915/intel_ddi.c