package/kernel/mac80211/patches/rt2x00/014-rt2x00-no-need-to-check-return-value-of-debugfs_crea.patch

   1 From 2587791d57588562c21e5ef7e678f02ab2f3eb82 Mon Sep 17 00:00:00 2001
   2 From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
   3 Date: Tue, 22 Jan 2019 16:21:34 +0100
   4 Subject: [PATCH 14/28] rt2x00: no need to check return value of debugfs_create
   5  functions
   6
   7 When calling debugfs functions, there is no need to ever check the
   8 return value.  The function can work or not, but the code logic should
   9 never do something different based on this.
  10
  11 Cc: Stanislaw Gruszka <sgruszka@redhat.com>
  12 Cc: Helmut Schaa <helmut.schaa@googlemail.com>
  13 Cc: Kalle Valo <kvalo@codeaurora.org>
  14 Cc: linux-wireless@vger.kernel.org
  15 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  16 Acked-by: Stanislaw Gruszka <sgruszka@redhat.com>
  17 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  18 ---
  19  .../net/wireless/ralink/rt2x00/rt2x00debug.c  | 27 -------------------
  20  1 file changed, 27 deletions(-)
  21
  22 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c
  23 +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c
  24 @@ -656,36 +656,24 @@ void rt2x00debug_register(struct rt2x00_
  25         intf->driver_folder =
  26             debugfs_create_dir(intf->rt2x00dev->ops->name,
  27                                rt2x00dev->hw->wiphy->debugfsdir);
  28 -       if (IS_ERR(intf->driver_folder) || !intf->driver_folder)
  29 -               goto exit;
  30
  31         intf->driver_entry =
  32             rt2x00debug_create_file_driver("driver", intf, &intf->driver_blob);
  33 -       if (IS_ERR(intf->driver_entry) || !intf->driver_entry)
  34 -               goto exit;
  35
  36         intf->chipset_entry =
  37             rt2x00debug_create_file_chipset("chipset",
  38                                             intf, &intf->chipset_blob);
  39 -       if (IS_ERR(intf->chipset_entry) || !intf->chipset_entry)
  40 -               goto exit;
  41
  42         intf->dev_flags = debugfs_create_file("dev_flags", 0400,
  43                                               intf->driver_folder, intf,
  44                                               &rt2x00debug_fop_dev_flags);
  45 -       if (IS_ERR(intf->dev_flags) || !intf->dev_flags)
  46 -               goto exit;
  47
  48         intf->cap_flags = debugfs_create_file("cap_flags", 0400,
  49                                               intf->driver_folder, intf,
  50                                               &rt2x00debug_fop_cap_flags);
  51 -       if (IS_ERR(intf->cap_flags) || !intf->cap_flags)
  52 -               goto exit;
  53
  54         intf->register_folder =
  55             debugfs_create_dir("register", intf->driver_folder);
  56 -       if (IS_ERR(intf->register_folder) || !intf->register_folder)
  57 -               goto exit;
  58
  59  #define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name)            \
  60  ({                                                                     \
  61 @@ -695,9 +683,6 @@ void rt2x00debug_register(struct rt2x00_
  62                                            0600,                        \
  63                                            (__intf)->register_folder,   \
  64                                            &(__intf)->offset_##__name); \
  65 -               if (IS_ERR((__intf)->__name##_off_entry) ||             \
  66 -                   !(__intf)->__name##_off_entry)                      \
  67 -                       goto exit;                                      \
  68                                                                         \
  69                 (__intf)->__name##_val_entry =                          \
  70                         debugfs_create_file(__stringify(__name) "_value", \
  71 @@ -705,9 +690,6 @@ void rt2x00debug_register(struct rt2x00_
  72                                             (__intf)->register_folder,  \
  73                                             (__intf),                   \
  74                                             &rt2x00debug_fop_##__name); \
  75 -               if (IS_ERR((__intf)->__name##_val_entry) ||             \
  76 -                   !(__intf)->__name##_val_entry)                      \
  77 -                       goto exit;                                      \
  78         }                                                               \
  79  })
  80
  81 @@ -721,15 +703,10 @@ void rt2x00debug_register(struct rt2x00_
  82
  83         intf->queue_folder =
  84             debugfs_create_dir("queue", intf->driver_folder);
  85 -       if (IS_ERR(intf->queue_folder) || !intf->queue_folder)
  86 -               goto exit;
  87
  88         intf->queue_frame_dump_entry =
  89                 debugfs_create_file("dump", 0400, intf->queue_folder,
  90                                     intf, &rt2x00debug_fop_queue_dump);
  91 -       if (IS_ERR(intf->queue_frame_dump_entry)
  92 -               || !intf->queue_frame_dump_entry)
  93 -               goto exit;
  94
  95         skb_queue_head_init(&intf->frame_dump_skbqueue);
  96         init_waitqueue_head(&intf->frame_dump_waitqueue);
  97 @@ -747,10 +724,6 @@ void rt2x00debug_register(struct rt2x00_
  98  #endif
  99
 100         return;
 101 -
 102 -exit:
 103 -       rt2x00debug_deregister(rt2x00dev);
 104 -       rt2x00_err(rt2x00dev, "Failed to register debug handler\n");
 105  }
 106
 107  void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev)