Index: uspace/drv/bus/usb/xhci/commands.c
===================================================================
--- uspace/drv/bus/usb/xhci/commands.c	(revision c46c35679bb04ee4af5c27267fafe2be0b25e6cc)
+++ uspace/drv/bus/usb/xhci/commands.c	(revision 2e7692fe7de232b07538e1f035442086d174c02e)
@@ -231,5 +231,4 @@
 	trb.control = host2xhci(32, XHCI_TRB_TYPE_ENABLE_SLOT_CMD << 10);
 	trb.control |= host2xhci(32, XHCI_REG_RD(hc->xecp, XHCI_EC_SP_SLOT_TYPE) << 16);
-	trb.control |= host2xhci(32, hc->command_ring.pcs);
 
 	cmd = add_cmd(hc, cmd);
@@ -247,5 +246,4 @@
 
 	trb.control = host2xhci(32, XHCI_TRB_TYPE_DISABLE_SLOT_CMD << 10);
-	trb.control |= host2xhci(32, hc->command_ring.pcs);
 	trb.control |= host2xhci(32, cmd->slot_id << 24);
 
@@ -281,5 +279,4 @@
 	 */
 	trb.control = host2xhci(32, XHCI_TRB_TYPE_ADDRESS_DEVICE_CMD << 10);
-	trb.control |= host2xhci(32, hc->command_ring.pcs);
 	trb.control |= host2xhci(32, cmd->slot_id << 24);
 
@@ -302,5 +299,4 @@
 
 	trb.control = host2xhci(32, XHCI_TRB_TYPE_CONFIGURE_ENDPOINT_CMD << 10);
-	trb.control |= host2xhci(32, hc->command_ring.pcs);
 	trb.control |= host2xhci(32, cmd->slot_id << 24);
 
@@ -329,5 +325,4 @@
 
 	trb.control = host2xhci(32, XHCI_TRB_TYPE_EVALUATE_CONTEXT_CMD << 10);
-	trb.control |= host2xhci(32, hc->command_ring.pcs);
 	trb.control |= host2xhci(32, cmd->slot_id << 24);
 
@@ -350,5 +345,4 @@
 
 	trb.control = host2xhci(32, XHCI_TRB_TYPE_RESET_ENDPOINT_CMD << 10);
-	trb.control |= host2xhci(32, hc->command_ring.pcs);
 	trb.control |= host2xhci(32, (tcs & 0x1) << 9);
 	trb.control |= host2xhci(32, (ep_id & 0x5) << 16);
@@ -367,5 +361,4 @@
 
 	trb.control = host2xhci(32, XHCI_TRB_TYPE_STOP_ENDPOINT_CMD << 10);
-	trb.control |= host2xhci(32, hc->command_ring.pcs);
 	trb.control |= host2xhci(32, (ep_id & 0x5) << 16);
 	trb.control |= host2xhci(32, (susp & 0x1) << 23);
@@ -386,5 +379,4 @@
 
 	trb.control = host2xhci(32, XHCI_TRB_TYPE_RESET_DEVICE_CMD << 10);
-	trb.control |= host2xhci(32, hc->command_ring.pcs);
 	trb.control |= host2xhci(32, cmd->slot_id << 24);