Index: ata-all.h
===================================================================
RCS file: /home/ncvs/src/sys/dev/ata/ata-all.h,v
retrieving revision 1.26.2.4
diff -u -r1.26.2.4 ata-all.h
--- ata-all.h	2000/10/30 09:41:28	1.26.2.4
+++ ata-all.h	2002/07/23 20:02:25
@@ -74,6 +74,7 @@
 #define		ATA_C_READ_DMA		0xc8	/* read w/DMA command */
 #define		ATA_C_WRITE_DMA		0xca	/* write w/DMA command */
 #define		ATA_C_WRITE_DMA_QUEUED	0xcc	/* write w/DMA QUEUED command */
+#define		ATA_C_IDLE		0xe3	/* idle command */
 #define		ATA_C_FLUSHCACHE	0xe7	/* flush cache to disk */
 #define		ATA_C_ATA_IDENTIFY	0xec	/* get ATA params */
 #define		ATA_C_SETFEATURES	0xef	/* features command */
Index: ata-disk.c
===================================================================
RCS file: /home/ncvs/src/sys/dev/ata/ata-disk.c,v
retrieving revision 1.60.2.9
diff -u -r1.60.2.9 ata-disk.c
--- ata-disk.c	2000/11/04 23:04:52	1.60.2.9
+++ ata-disk.c	2002/07/23 20:44:15
@@ -174,6 +174,10 @@
 	    printf("ad%d: disabling service interrupt failed\n", adp->lun);
     }
 
+    /* set standbye timer for 10 minutes */
+    if (ata_command(adp->controller, adp->unit, ATA_C_IDLE, 0, 0, 0, 120, 0, ATA_WAIT_INTR))
+        printf("ad%d: failed to set standby timer.\n", adp->lun);
+
     devstat_add_entry(&adp->stats, "ad", adp->lun, DEV_BSIZE,
 		      DEVSTAT_NO_ORDERED_TAGS,
 		      DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_IDE,