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drm/radeon/kms: don't enable connectors that are off in the hotplug handler

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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>
This commit is contained in:
Alex Deucher 2011-08-09 17:09:06 +00:00 committed by Dave Airlie
parent 72fa59970f
commit 73104b5cfe
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/radeon/radeon_connectors.c
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@ -60,6 +60,10 @@ void radeon_connector_hotplug(struct drm_connector *connector)
radeon_hpd_set_polarity(rdev, radeon_connector->hpd.hpd);
/* if the connector is already off, don't turn it back on */
if (connector->dpms != DRM_MODE_DPMS_ON)
return;
/* powering up/down the eDP panel generates hpd events which
* can interfere with modesetting.
*/