--- sys/dev/ata/ata-all.c	2008-11-22 17:00:59.000000000 +0800
+++ /var/current/mysrc/sys/dev/ata/ata-all.c	2008-11-23 21:44:15.000000000 +0800
@@ -304,11 +304,10 @@
 int
 ata_resume(device_t dev)
 {
-    struct ata_channel *ch;
     int error;
 
     /* check for valid device */
-    if (!dev || !(ch = device_get_softc(dev)))
+    if (!dev || !device_get_softc(dev))
 	return ENXIO;
 
     /* reinit the devices, we dont know what mode/state they are in */