diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 2cf8251..1263d1b 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -716,6 +716,8 @@ ata_dev_try_classify(struct ata_port *ap, unsigned int device, u8 *r_err)
 	memset(&tf, 0, sizeof(tf));
 
 	ap->ops->tf_read(ap, &tf);
+	ata_port_printk(ap, KERN_INFO, "CLASSIFY: device %u %02x:%02x %02x:%02x:%02x\n",
+			device, tf.command, tf.feature, tf.lbal, tf.lbam, tf.lbah);
 	err = tf.feature;
 	if (r_err)
 		*r_err = err;