drivers/usb/host/xhci-dbg.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * xHCI host controller driver
   4  *
   5  * Copyright (C) 2008 Intel Corp.
   6  *
   7  * Author: Sarah Sharp
   8  * Some code borrowed from the Linux EHCI driver.
   9  */
  10
  11 #include "xhci.h"
  12
  13 char *xhci_get_slot_state(struct xhci_hcd *xhci,
  14                 struct xhci_container_ctx *ctx)
  15 {
  16         struct xhci_slot_ctx *slot_ctx = xhci_get_slot_ctx(xhci, ctx);
  17         int state = GET_SLOT_STATE(le32_to_cpu(slot_ctx->dev_state));
  18
  19         return xhci_slot_state_string(state);
  20 }
  21
  22 void xhci_dbg_trace(struct xhci_hcd *xhci, void (*trace)(struct va_format *),
  23                         const char *fmt, ...)
  24 {
  25         struct va_format vaf;
  26         va_list args;
  27
  28         va_start(args, fmt);
  29         vaf.fmt = fmt;
  30         vaf.va = &args;
  31         xhci_dbg(xhci, "%pV\n", &vaf);
  32         trace(&vaf);
  33         va_end(args);
  34 }
  35 EXPORT_SYMBOL_GPL(xhci_dbg_trace);