--- linux-2.6.20.3-mod2-2/drivers/ata/libata-core.c	2007-03-20 11:32:28.000000000 +0800
+++ linux-2.6.20.3-mod2-3/drivers/ata/libata-core.c	2007-03-20 13:32:46.000000000 +0800
@@ -5159,11 +5159,18 @@ inline unsigned int ata_host_intr (struc
 
 	/* check altstatus */
 	status = ata_altstatus(ap);
+	if (ap->id == 2)
+		printk(KERN_ERR "ata%u: dev_altstatus 0x%X\n",
+		       status);
+
 	if (status & ATA_BUSY)
 		goto idle_irq;
 
 	/* check main status, clearing INTRQ */
 	status = ata_chk_status(ap);
+	if (ap->id == 2)
+		printk(KERN_ERR "ata%u: dev_status 0x%X\n",
+		       status);
 	if (unlikely(status & ATA_BUSY))
 		goto idle_irq;