drm/radeon/kms: don't enable connectors that are off in the hotplug handler
If we get a hotplug event on an connector that is off, don't attempt to turn it on or off, it should already be off. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=728228 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -60,6 +60,10 @@ void radeon_connector_hotplug(struct drm_connector *connector)
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radeon_hpd_set_polarity(rdev, radeon_connector->hpd.hpd);
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/* if the connector is already off, don't turn it back on */
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if (connector->dpms != DRM_MODE_DPMS_ON)
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return;
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/* powering up/down the eDP panel generates hpd events which
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* can interfere with modesetting.
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*/
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