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@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 4ccd61f..845e41f 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1672,7 +1672,9 @@ 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;