net/wimax/debugfs.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Linux WiMAX
   4  * Debugfs support
   5  *
   6  * Copyright (C) 2005-2006 Intel Corporation <linux-wimax@intel.com>
   7  * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
   8  */
   9 #include <linux/debugfs.h>
  10 #include <linux/wimax.h>
  11 #include "wimax-internal.h"
  12
  13 #define D_SUBMODULE debugfs
  14 #include "debug-levels.h"
  15
  16
  17 #define __debugfs_register(prefix, name, parent)                        \
  18 do {                                                                    \
  19         result = d_level_register_debugfs(prefix, name, parent);        \
  20         if (result < 0)                                                 \
  21                 goto error;                                             \
  22 } while (0)
  23
  24
  25 int wimax_debugfs_add(struct wimax_dev *wimax_dev)
  26 {
  27         int result;
  28         struct net_device *net_dev = wimax_dev->net_dev;
  29         struct device *dev = net_dev->dev.parent;
  30         struct dentry *dentry;
  31         char buf[128];
  32
  33         snprintf(buf, sizeof(buf), "wimax:%s", net_dev->name);
  34         dentry = debugfs_create_dir(buf, NULL);
  35         result = PTR_ERR(dentry);
  36         if (IS_ERR(dentry)) {
  37                 if (result == -ENODEV)
  38                         result = 0;     /* No debugfs support */
  39                 else
  40                         dev_err(dev, "Can't create debugfs dentry: %d\n",
  41                                 result);
  42                 goto out;
  43         }
  44         wimax_dev->debugfs_dentry = dentry;
  45         __debugfs_register("wimax_dl_", debugfs, dentry);
  46         __debugfs_register("wimax_dl_", id_table, dentry);
  47         __debugfs_register("wimax_dl_", op_msg, dentry);
  48         __debugfs_register("wimax_dl_", op_reset, dentry);
  49         __debugfs_register("wimax_dl_", op_rfkill, dentry);
  50         __debugfs_register("wimax_dl_", op_state_get, dentry);
  51         __debugfs_register("wimax_dl_", stack, dentry);
  52         result = 0;
  53 out:
  54         return result;
  55
  56 error:
  57         debugfs_remove_recursive(wimax_dev->debugfs_dentry);
  58         return result;
  59 }
  60
  61 void wimax_debugfs_rm(struct wimax_dev *wimax_dev)
  62 {
  63         debugfs_remove_recursive(wimax_dev->debugfs_dentry);
  64 }