[PATCH] libata-dev: filter out noisy ATAPI error messages

Changes:
 - Filter out ATAPI packet command error messages in ata_pio_error()
 - Filter out ATAPI packet command error messages in ata_host_intr()

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>

======
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/scsi/libata-core.c

@@ -3520,11 +3520,12 @@ static void ata_pio_error(struct ata_port *ap)
 {
 	struct ata_queued_cmd *qc;
 
-	printk(KERN_WARNING "ata%u: PIO error\n", ap->id);
-
 	qc = ata_qc_from_tag(ap, ap->active_tag);
 	assert(qc != NULL);
 
+	if (qc->tf.command != ATA_CMD_PACKET)
+		printk(KERN_WARNING "ata%u: PIO error\n", ap->id);
+
 	/* make sure qc->err_mask is available to 
 	 * know what's wrong and recover
 	 */
@@ -4404,8 +4405,9 @@ inline unsigned int ata_host_intr (struct ata_port *ap,
 		break;
 
 	case HSM_ST_ERR:
-		printk(KERN_ERR "ata%u: command error, drv_stat 0x%x host_stat 0x%x\n",
-		       ap->id, status, host_stat);
+		if (qc->tf.command != ATA_CMD_PACKET)
+			printk(KERN_ERR "ata%u: command error, drv_stat 0x%x host_stat 0x%x\n",
+			       ap->id, status, host_stat);
 
 		/* make sure qc->err_mask is available to 
 		 * know what's wrong and recover