Index: uspace/drv/audio/hdaudio/codec.c
===================================================================
--- uspace/drv/audio/hdaudio/codec.c	(revision 18b6a8849d630cc3bca153fb21bd225eebb16f4c)
+++ uspace/drv/audio/hdaudio/codec.c	(revision 3fafe5e03bb501f8627b315f8e97330dd3996f86)
@@ -129,5 +129,5 @@
 		return rc;
 
-//	ddf_msg(LVL_NOTE, "hda_get_clist_len: resp=0x%x", resp);
+	ddf_msg(LVL_DEBUG2, "hda_get_clist_len: resp=0x%x", resp);
 	*longform = resp & BIT_V(uint32_t, cll_longform);
 	*items = resp & BIT_RANGE_EXTRACT(uint32_t, cll_len_h, cll_len_l, resp);
@@ -238,9 +238,9 @@
     uint32_t *resp)
 {
-//	ddf_msg(LVL_NOTE, "hda_get_amp_gain_mute(codec, %d, %x)",
-//	    node, payload);
+	ddf_msg(LVL_DEBUG2, "hda_get_amp_gain_mute(codec, %d, %x)",
+	    node, payload);
 	errno_t rc = hda_ccmd(codec, node, hda_amp_gain_mute_get, payload, resp);
-//	ddf_msg(LVL_NOTE, "hda_get_amp_gain_mute(codec, %d, %x, resp=%x)",
-//	    node, payload, *resp);
+	ddf_msg(LVL_DEBUG2, "hda_get_amp_gain_mute(codec, %d, %x, resp=%x)",
+	    node, payload, *resp);
 	return rc;
 }
@@ -254,6 +254,6 @@
 static errno_t hda_set_amp_gain_mute(hda_codec_t *codec, int node, uint16_t payload)
 {
-//	ddf_msg(LVL_NOTE, "hda_set_amp_gain_mute(codec, %d, %x)",
-//	    node, payload);
+	ddf_msg(LVL_DEBUG2, "hda_set_amp_gain_mute(codec, %d, %x)",
+	    node, payload);
 	return hda_ccmd(codec, node, hda_amp_gain_mute_set, payload, NULL);
 }
@@ -362,5 +362,5 @@
 	}
 
-//	ddf_msg(LVL_NOTE, "longform:%d len:%d", longform, len);
+	ddf_msg(LVL_DEBUG2, "longform:%d len:%d", longform, len);
 
 	if (longform) {
Index: uspace/drv/audio/hdaudio/hdactl.c
===================================================================
--- uspace/drv/audio/hdaudio/hdactl.c	(revision 18b6a8849d630cc3bca153fb21bd225eebb16f4c)
+++ uspace/drv/audio/hdaudio/hdactl.c	(revision 3fafe5e03bb501f8627b315f8e97330dd3996f86)
@@ -644,5 +644,5 @@
 		rc = hda_rirb_read(ctl->hda, &resp);
 		if (rc != EOK) {
-//			ddf_msg(LVL_NOTE, "nothing in rirb");
+			ddf_msg(LVL_DEBUG2, "nothing in rirb");
 			break;
 		}
Index: uspace/drv/audio/hdaudio/hdaudio.c
===================================================================
--- uspace/drv/audio/hdaudio/hdaudio.c	(revision 18b6a8849d630cc3bca153fb21bd225eebb16f4c)
+++ uspace/drv/audio/hdaudio/hdaudio.c	(revision 3fafe5e03bb501f8627b315f8e97330dd3996f86)
@@ -374,5 +374,4 @@
 	if (0)
 		ddf_msg(LVL_NOTE, "## interrupt ##");
-//	ddf_msg(LVL_NOTE, "interrupt arg4=0x%x", (int)IPC_GET_ARG4(*icall));
 	hda_ctl_interrupt(hda->ctl);
 
Index: uspace/drv/audio/hdaudio/stream.c
===================================================================
--- uspace/drv/audio/hdaudio/stream.c	(revision 18b6a8849d630cc3bca153fb21bd225eebb16f4c)
+++ uspace/drv/audio/hdaudio/stream.c	(revision 3fafe5e03bb501f8627b315f8e97330dd3996f86)
@@ -56,5 +56,5 @@
 	hda_stream_buffers_t *bufs = NULL;
 	size_t i;
-//	size_t j, k;
+	//size_t j, k;
 	errno_t rc;
 
Index: uspace/drv/bus/usb/ehci/hw_struct/queue_head.c
===================================================================
--- uspace/drv/bus/usb/ehci/hw_struct/queue_head.c	(revision 18b6a8849d630cc3bca153fb21bd225eebb16f4c)
+++ uspace/drv/bus/usb/ehci/hw_struct/queue_head.c	(revision 3fafe5e03bb501f8627b315f8e97330dd3996f86)
@@ -55,5 +55,7 @@
 
 	EHCI_MEM32_WR(instance->horizontal, LINK_POINTER_TERM);
-//	EHCI_MEM32_WR(instance->current, LINK_POINTER_TERM);
+#if 0
+	EHCI_MEM32_WR(instance->current, LINK_POINTER_TERM);
+#endif
 	EHCI_MEM32_WR(instance->next, LINK_POINTER_TERM);
 	EHCI_MEM32_WR(instance->alternate, LINK_POINTER_TERM);
Index: uspace/drv/bus/usb/uhci/uhci_rh.c
===================================================================
--- uspace/drv/bus/usb/uhci/uhci_rh.c	(revision 18b6a8849d630cc3bca153fb21bd225eebb16f4c)
+++ uspace/drv/bus/usb/uhci/uhci_rh.c	(revision 3fafe5e03bb501f8627b315f8e97330dd3996f86)
@@ -246,5 +246,7 @@
 	    UHCI2USB(val, STATUS_CONNECTED_CHANGED, USB_HUB_PORT_STATUS_C_CONNECTION) |
 	    UHCI2USB(val, STATUS_ENABLED_CHANGED, USB2_HUB_PORT_STATUS_C_ENABLE) |
-//	    UHCI2USB(val, STATUS_SUSPEND, USB2_HUB_PORT_STATUS_C_SUSPEND) |
+#if 0
+	    UHCI2USB(val, STATUS_SUSPEND, USB2_HUB_PORT_STATUS_C_SUSPEND) |
+#endif
 	    (hub->reset_changed[port] ?  USB_HUB_PORT_STATUS_C_RESET : 0));
 	RH_DEBUG(hub, port, "Port status %" PRIx32 " (source %" PRIx16
Index: uspace/drv/bus/usb/xhci/hw_struct/trb.h
===================================================================
--- uspace/drv/bus/usb/xhci/hw_struct/trb.h	(revision 18b6a8849d630cc3bca153fb21bd225eebb16f4c)
+++ uspace/drv/bus/usb/xhci/hw_struct/trb.h	(revision 3fafe5e03bb501f8627b315f8e97330dd3996f86)
@@ -48,5 +48,7 @@
 	XHCI_TRB_TYPE_RESERVED = 0,
 
-// Transfer ring:
+	/*
+	 * Transfer ring:
+	 */
 	XHCI_TRB_TYPE_NORMAL,
 	XHCI_TRB_TYPE_SETUP_STAGE,
@@ -58,5 +60,7 @@
 	XHCI_TRB_TYPE_NO_OP,
 
-// Command ring:
+	/*
+	 * Command ring:
+	 */
 	XHCI_TRB_TYPE_ENABLE_SLOT_CMD,
 	XHCI_TRB_TYPE_DISABLE_SLOT_CMD,
@@ -74,7 +78,11 @@
 	XHCI_TRB_TYPE_FORCE_HEADER_CMD,
 	XHCI_TRB_TYPE_NO_OP_CMD,
-// Reserved: 24-31
-
-// Event ring:
+	/*
+	 * Reserved: 24-31
+	*/
+
+	/*
+	 * Event ring:
+	 */
 	XHCI_TRB_TYPE_TRANSFER_EVENT = 32,
 	XHCI_TRB_TYPE_COMMAND_COMPLETION_EVENT,
Index: uspace/drv/fb/amdm37x_dispc/amdm37x_dispc.c
===================================================================
--- uspace/drv/fb/amdm37x_dispc/amdm37x_dispc.c	(revision 18b6a8849d630cc3bca153fb21bd225eebb16f4c)
+++ uspace/drv/fb/amdm37x_dispc/amdm37x_dispc.c	(revision 3fafe5e03bb501f8627b315f8e97330dd3996f86)
@@ -204,8 +204,10 @@
 	/* modes taken from u-boot, for 1024x768 */
 	// TODO replace magic values with actual correct values
-//	regs->timing_h = 0x1a4024c9;
-//	regs->timing_v = 0x02c00509;
-//	regs->pol_freq = 0x00007028;
-//	regs->divisor  = 0x00010001;
+#if 0
+	regs->timing_h = 0x1a4024c9;
+	regs->timing_v = 0x02c00509;
+	regs->pol_freq = 0x00007028;
+	regs->divisor  = 0x00010001;
+#endif
 
 	/* setup output */