diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index a87748b..1063928 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -1327,7 +1327,7 @@
 		if (print_info)
 			printk(KERN_INFO "ata%u(%u): applying bridge limits\n",
 			       ap->id, dev->devno);
-		ap->udma_mask &= ATA_UDMA5;
+		dev->udma_mask &= ATA_UDMA5;
 		dev->max_sectors = ATA_MAX_SECTORS;
 	}