diff --git a/us144mkii.c b/us144mkii.c
index 6e42972..de2abea 100644
--- a/us144mkii.c
+++ b/us144mkii.c
@@ -322,6 +322,13 @@ static int tascam_suspend(struct usb_interface *intf, pm_message_t message)
 	usb_kill_anchored_urbs(&tascam->midi_in_anchor);
 	usb_kill_anchored_urbs(&tascam->midi_out_anchor);
 
+	dev_info(&intf->dev, "sending deep sleep command\n");
+	int err = usb_control_msg(tascam->dev, usb_sndctrlpipe(tascam->dev, 0),
+				  VENDOR_REQ_DEEP_SLEEP, RT_H2D_VENDOR_DEV,
+				  0x0000, 0x0000, NULL, 0, USB_CTRL_TIMEOUT_MS);
+	if (err < 0)
+		dev_err(&intf->dev, "deep sleep command failed: %d\n", err);
+
 	return 0;
 }
 
diff --git a/us144mkii.h b/us144mkii.h
index c740a0b..ecc4c2f 100644
--- a/us144mkii.h
+++ b/us144mkii.h
@@ -46,6 +46,7 @@ enum uac_control_selector {
 
 enum tascam_vendor_request {
 	VENDOR_REQ_REGISTER_WRITE = 0x41,
+	VENDOR_REQ_DEEP_SLEEP = 0x44,
 	VENDOR_REQ_MODE_CONTROL = 0x49,
 };
 
diff --git a/us144mkii_pcm.c b/us144mkii_pcm.c
index bc13338..5a066ce 100644
--- a/us144mkii_pcm.c
+++ b/us144mkii_pcm.c
@@ -118,6 +118,7 @@ int us144mkii_configure_device_for_rate(struct tascam_card *tascam, int rate)
 	u16 rate_vendor_wValue;
 	int err = 0;
 	const u8 *current_payload_src;
+
 	u8 *rate_payload_buf __free(kfree);
 
 	static const u8 payload_44100[] = { 0x44, 0xac, 0x00 };