Merge branch 'drm-fixes-3.18' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

fix one regression and one endian issue.

* 'drm-fixes-3.18' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: fix endian swapping in vbios fetch for tdp table
  drm/radeon: disable native backlight control on pre-r6xx asics (v2)

drivers/gpu/drm/radeon/r600_dpm.c

@@ -1256,7 +1256,7 @@ int r600_parse_extended_power_table(struct radeon_device *rdev)
 					(mode_info->atom_context->bios + data_offset +
 					 le16_to_cpu(ext_hdr->usPowerTuneTableOffset));
 				rdev->pm.dpm.dyn_state.cac_tdp_table->maximum_power_delivery_limit =
-					ppt->usMaximumPowerDeliveryLimit;
+					le16_to_cpu(ppt->usMaximumPowerDeliveryLimit);
 				pt = &ppt->power_tune_table;
 			} else {
 				ATOM_PPLIB_POWERTUNE_Table *ppt = (ATOM_PPLIB_POWERTUNE_Table *)

drivers/gpu/drm/radeon/radeon_encoders.c

@@ -179,6 +179,9 @@ static void radeon_encoder_add_backlight(struct radeon_encoder *radeon_encoder,
 		    (rdev->pdev->subsystem_vendor == 0x1734) &&
 		    (rdev->pdev->subsystem_device == 0x1107))
 			use_bl = false;
+		/* disable native backlight control on older asics */
+		else if (rdev->family < CHIP_R600)
+			use_bl = false;
 		else
 			use_bl = true;
 	}