--- src/sys/dev/ata/ata-chipset.c	Tue Nov 11 20:26:51 2008
+++ src/sys/dev/ata/ata-chipset.c	Mon Nov 17 15:36:22 2008
@@ -1937,7 +1937,7 @@ 
 	}
     }
     pci_write_config(parent, 0x92, pci_read_config(parent, 0x92, 2) & ~mask, 2);
-    DELAY(10);
+    DELAY(11);
     pci_write_config(parent, 0x92, pci_read_config(parent, 0x92, 2) | mask, 2);
 
     /* wait up to 1 sec for "connect well" */