[23/26] drm/radeon/kms: dont enable connectors that are off in the

From: Greg KH
Date: Mon Aug 15 2011 - 22:51:43 EST

3.0-stable review patch. If anyone has any objections, please let us know.

hotplug handler

From: Alex Deucher <alexander.deucher@xxxxxxx>

commit 73104b5cfe3067d68f2c2de3f3d4d4964c55873e upstream.

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.


Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

drivers/gpu/drm/radeon/radeon_connectors.c | 4 ++++
1 file changed, 4 insertions(+)

--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -60,6 +60,10 @@ void radeon_connector_hotplug(struct drm

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.

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