linux-kernel - [003/139] drm: remove the EDID blob stored in the EDID property when it is disconnected

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Date:	Thu, 22 Apr 2010 12:53:00 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Zhao Yakui <yakui.zhao@...el.com>,
	Zhenyu Wang <zhenyuw@...ux.intel.com>,
	Dave Airlie <airlied@...hat.com>
Subject: [003/139] drm: remove the EDID blob stored in the EDID property when it is disconnected

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

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

From: Zhao Yakui <yakui.zhao@...el.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@...el.com>
Signed-off-by: Zhenyu Wang <zhenyuw@...ux.intel.com>
Signed-off-by: Dave Airlie <airlied@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.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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