drm/radeon: fix LCD record parsing

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@amd.com>
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 4ac5f4027620c69c638b316822d5ab481b2f8810..112c96352562474b271ff9abde4a4b3fdf542eb3 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1681,7 +1681,9 @@ struct radeon_encoder_atom_dig *radeon_atombios_get_lvds_info(struct
                                                                kfree(edid);
                                                }
                                        }
-                                       record += sizeof(ATOM_FAKE_EDID_PATCH_RECORD);
+                                       record += fake_edid_record->ucFakeEDIDLength ?
+                                               fake_edid_record->ucFakeEDIDLength + 2 :
+                                               sizeof(ATOM_FAKE_EDID_PATCH_RECORD);
                                        break;
                                case LCD_PANEL_RESOLUTION_RECORD_TYPE:
                                        panel_res_record = (ATOM_PANEL_RESOLUTION_PATCH_RECORD *)record;