linux-kernel - [PATCH 3.19 021/101] drm/edid: set ELD for firmware and debugfs override EDIDs

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Date:	Fri, 17 Apr 2015 15:28:09 +0200
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Emil <emilsvennesson@...il.com>,
	Rob Engle <grenoble@...il.com>, Jolan Luff <jolan@...msby.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Jani Nikula <jani.nikula@...el.com>
Subject: [PATCH 3.19 021/101] drm/edid: set ELD for firmware and debugfs override EDIDs

3.19-stable review patch.  If anyone has any objections, please let me know.

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

From: Jani Nikula <jani.nikula@...el.com>

commit ad692b46dbf122ef90aadce3b389ef64c90e861d upstream.

If the user supplies EDID through firmware or debugfs override, the
driver callbacks are bypassed and the connector ELD does not get
updated, and audio fails. Set ELD for firmware and debugfs EDIDs too.

There should be no harm in gratuitously doing this for non HDMI/DP
connectors, as it's still up to the driver to use the ELD, if any.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82349
Reference: https://bugs.freedesktop.org/show_bug.cgi?id=80691
Reported-by: Emil <emilsvennesson@...il.com>
Reported-by: Rob Engle <grenoble@...il.com>
Tested-by: Jolan Luff <jolan@...msby.com>
Reviewed-by: Daniel Vetter <daniel.vetter@...ll.ch>
Signed-off-by: Jani Nikula <jani.nikula@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/drm_edid_load.c    |    1 +
 drivers/gpu/drm/drm_probe_helper.c |    1 +
 2 files changed, 2 insertions(+)

--- a/drivers/gpu/drm/drm_edid_load.c
+++ b/drivers/gpu/drm/drm_edid_load.c
@@ -287,6 +287,7 @@ int drm_load_edid_firmware(struct drm_co
 
 	drm_mode_connector_update_edid_property(connector, edid);
 	ret = drm_add_edid_modes(connector, edid);
+	drm_edid_to_eld(connector, edid);
 	kfree(edid);
 
 	return ret;
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -152,6 +152,7 @@ static int drm_helper_probe_single_conne
 			struct edid *edid = (struct edid *) connector->edid_blob_ptr->data;
 
 			count = drm_add_edid_modes(connector, edid);
+			drm_edid_to_eld(connector, edid);
 		} else
 			count = (*connector_funcs->get_modes)(connector);
 	}


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