usb: xhci: remove xhci_debug_trb()

Every XHCI TRB has already been traced by the trb trace events.
It is unnecessary to put the same message in kernel log. This
patch removes xhci_debug_trb().
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/xhci-dbg.c

@@ -254,63 +254,6 @@ void xhci_print_registers(struct xhci_hcd *xhci)
 	xhci_print_ports(xhci);
 }
 
-void xhci_print_trb_offsets(struct xhci_hcd *xhci, union xhci_trb *trb)
-{
-	int i;
-	for (i = 0; i < 4; i++)
-		xhci_dbg(xhci, "Offset 0x%x = 0x%x\n",
-				i*4, trb->generic.field[i]);
-}
-
-/**
- * Debug a transfer request block (TRB).
- */
-void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb)
-{
-	u64	address;
-	u32	type = le32_to_cpu(trb->link.control) & TRB_TYPE_BITMASK;
-
-	switch (type) {
-	case TRB_TYPE(TRB_LINK):
-		xhci_dbg(xhci, "Link TRB:\n");
-		xhci_print_trb_offsets(xhci, trb);
-
-		address = le64_to_cpu(trb->link.segment_ptr);
-		xhci_dbg(xhci, "Next ring segment DMA address = 0x%llx\n", address);
-
-		xhci_dbg(xhci, "Interrupter target = 0x%x\n",
-			 GET_INTR_TARGET(le32_to_cpu(trb->link.intr_target)));
-		xhci_dbg(xhci, "Cycle bit = %u\n",
-			 le32_to_cpu(trb->link.control) & TRB_CYCLE);
-		xhci_dbg(xhci, "Toggle cycle bit = %u\n",
-			 le32_to_cpu(trb->link.control) & LINK_TOGGLE);
-		xhci_dbg(xhci, "No Snoop bit = %u\n",
-			 le32_to_cpu(trb->link.control) & TRB_NO_SNOOP);
-		break;
-	case TRB_TYPE(TRB_TRANSFER):
-		address = le64_to_cpu(trb->trans_event.buffer);
-		/*
-		 * FIXME: look at flags to figure out if it's an address or if
-		 * the data is directly in the buffer field.
-		 */
-		xhci_dbg(xhci, "DMA address or buffer contents= %llu\n", address);
-		break;
-	case TRB_TYPE(TRB_COMPLETION):
-		address = le64_to_cpu(trb->event_cmd.cmd_trb);
-		xhci_dbg(xhci, "Command TRB pointer = %llu\n", address);
-		xhci_dbg(xhci, "Completion status = %u\n",
-			 GET_COMP_CODE(le32_to_cpu(trb->event_cmd.status)));
-		xhci_dbg(xhci, "Flags = 0x%x\n",
-			 le32_to_cpu(trb->event_cmd.flags));
-		break;
-	default:
-		xhci_dbg(xhci, "Unknown TRB with TRB type ID %u\n",
-				(unsigned int) type>>10);
-		xhci_print_trb_offsets(xhci, trb);
-		break;
-	}
-}
-
 void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst)
 {
 	u64 addr = erst->erst_dma_addr;

drivers/usb/host/xhci-ring.c

@@ -2463,10 +2463,6 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 				xhci_warn(xhci, "WARN Event TRB for slot %d ep %d with no TDs queued?\n",
 						TRB_TO_SLOT_ID(le32_to_cpu(event->flags)),
 						ep_index);
-				xhci_dbg(xhci, "Event TRB with TRB type ID %u\n",
-						(le32_to_cpu(event->flags) &
-						 TRB_TYPE_BITMASK)>>10);
-				xhci_print_trb_offsets(xhci, (union xhci_trb *) event);
 			}
 			if (ep->skip) {
 				ep->skip = false;

drivers/usb/host/xhci.h

@@ -1921,8 +1921,6 @@ void xhci_print_ir_set(struct xhci_hcd *xhci, int set_num);
 void xhci_print_registers(struct xhci_hcd *xhci);
 void xhci_dbg_regs(struct xhci_hcd *xhci);
 void xhci_print_run_regs(struct xhci_hcd *xhci);
-void xhci_print_trb_offsets(struct xhci_hcd *xhci, union xhci_trb *trb);
-void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb);
 void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst);
 void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci);
 void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int last_ep);