1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/usb/host/xhci-dbg.c b/drivers/usb/host/xhci-dbg.c
index 6dbf7d856f80..570cd4820458 100644
--- a/drivers/usb/host/xhci-dbg.c
+++ b/drivers/usb/host/xhci-dbg.c
@@ -152,6 +152,31 @@ void xhci_print_op_regs(struct xhci_hcd *xhci)
         xhci_print_status(xhci);
 }
 
+void xhci_print_ports(struct xhci_hcd *xhci)
+{
+        u32 __iomem *addr;
+        int i, j;
+        int ports;
+        char *names[NUM_PORT_REGS] = {
+                "status",
+                "power",
+                "link",
+                "reserved",
+        };
+
+        ports = HCS_MAX_PORTS(xhci->hcs_params1);
+        addr = &xhci->op_regs->port_status_base;
+        for (i = 0; i < ports; i++) {
+                for (j = 0; j < NUM_PORT_REGS; ++j) {
+                        xhci_dbg(xhci, "0x%x port %s reg = 0x%x\n",
+                                        (unsigned int) addr,
+                                        names[j],
+                                        (unsigned int) xhci_readl(xhci, addr));
+                        addr++;
+                }
+        }
+}
+
 void xhci_print_ir_set(struct xhci_hcd *xhci, struct intr_reg *ir_set, int set_num)
 {
         void *addr;
@@ -228,6 +253,7 @@ void xhci_print_registers(struct xhci_hcd *xhci)
 {
         xhci_print_cap_regs(xhci);
         xhci_print_op_regs(xhci);
+        xhci_print_ports(xhci);
 }
 
 void xhci_print_trb_offsets(struct xhci_hcd *xhci, union xhci_trb *trb)