[ 3.8.y.z extended stable ] Patch "drm/radeon: fix LCD record parsing" has been added to staging queue

Kamal Mostafa kamal at canonical.com
Fri Sep 20 00:36:19 UTC 2013

This is a note to let you know that I have just added a patch titled

    drm/radeon: fix LCD record parsing

to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree 
which can be found at:


This patch is scheduled to be released in version

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.8.y.z tree, see



>From 67b6e97c47282778ac53141bd1136acde97090b9 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher at amd.com>
Date: Tue, 20 Aug 2013 14:59:01 -0400
Subject: drm/radeon: fix LCD record parsing

commit 95663948ba22a4be8b99acd67fbf83e86ddffba4 upstream.

If the LCD table contains an EDID record, properly account
for the edid size when walking through the records.

This should fix error messages about unknown LCD records.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
 drivers/gpu/drm/radeon/radeon_atombios.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 96168ef..1105876 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1651,7 +1651,9 @@ struct radeon_encoder_atom_dig *radeon_atombios_get_lvds_info(struct
-					record += sizeof(ATOM_FAKE_EDID_PATCH_RECORD);
+					record += fake_edid_record->ucFakeEDIDLength ?
+						fake_edid_record->ucFakeEDIDLength + 2 :
 					panel_res_record = (ATOM_PANEL_RESOLUTION_PATCH_RECORD *)record;

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