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Subject[003/197] drm: remove the EDID blob stored in the EDID property when it is disconnected
2.6.32-stable review patch.  If anyone has any objections, please let us know.


From: Zhao Yakui <>

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

Signed-off-by: Zhao Yakui <>
Signed-off-by: Zhenyu Wang <>
Signed-off-by: Dave Airlie <>
Signed-off-by: Greg Kroah-Hartman <>

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_mode_connector_update_edid_property(connector, NULL);
goto prune;

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