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From: Greg KH on 22 Apr 2010 16:40
2.6.33-stable review patch. If anyone has any objections, please let us know.

------------------

From: Zhao Yakui <yakui.zhao(a)intel.com>

commit 725398322d05486109375fbb85c3404108881e17 upstream.

Now the EDID property will be updated when the corresponding EDID can be
obtained from the external display device. But after the external device
is plugged-out, the EDID property is not updated. In such case we still
get the corresponding EDID property although it is already detected as
disconnected.

https://bugs.freedesktop.org/show_bug.cgi?id=26743

Signed-off-by: Zhao Yakui <yakui.zhao(a)intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw(a)linux.intel.com>
Signed-off-by: Dave Airlie <airlied(a)redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>

---
drivers/gpu/drm/drm_crtc_helper.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -104,6 +104,7 @@ int drm_helper_probe_single_connector_mo
if (connector->status == connector_status_disconnected) {
DRM_DEBUG_KMS("%s is disconnected\n",
drm_get_connector_name(connector));
+ drm_mode_connector_update_edid_property(connector, NULL);
goto prune;
}



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