drm/i915: take display port power domain in DP HPD handler

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Ville noticed that we can call ibx_digital_port_connected() which accesses
the HW without holding any power well/runtime pm reference. Fix this by
holding a display port power domain reference around the whole hpd_pulse
handler.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Cc: stable@vger.kernel.org (3.16+)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

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Imre Deak 2014-08-18 14:42:42 +03:00 • committed by Jani Nikula

parent 1add143caf

commit 1c767b339b

1 changed files with 14 additions and 5 deletions

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drivers/gpu/drm/i915/intel_dp.c

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