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Revert "wifi: cfg80211: check wiphy mutex is held for wdev mutex"

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This reverts commit 89795eeba6 which is
commmit 1474bc87fe upstream.

The reverted commit is based on implementation of wiphy locking that isn't
planned to redo on a stable kernel, so revert it to avoid warning:

 WARNING: CPU: 0 PID: 9 at net/wireless/core.h:231 disconnect_work+0xb8/0x144 [cfg80211]
 CPU: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.6.51-00141-ga1649b6f8ed6 #7
 Hardware name: Freescale i.MX6 SoloX (Device Tree)
 Workqueue: events disconnect_work [cfg80211]
  unwind_backtrace from show_stack+0x10/0x14
  show_stack from dump_stack_lvl+0x58/0x70
  dump_stack_lvl from __warn+0x70/0x1c0
  __warn from warn_slowpath_fmt+0x16c/0x294
  warn_slowpath_fmt from disconnect_work+0xb8/0x144 [cfg80211]
  disconnect_work [cfg80211] from process_one_work+0x204/0x620
  process_one_work from worker_thread+0x1b0/0x474
  worker_thread from kthread+0x10c/0x12c
  kthread from ret_from_fork+0x14/0x24

Reported-by: petter@technux.se
Closes: https://lore.kernel.org/linux-wireless/9e98937d781c990615ef27ee0c858ff9@technux.se/T/#t
Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ping-Ke Shih 2024-09-26 08:30:17 +08:00 committed by Greg Kroah-Hartman
parent ded5376ee3
commit e0f6749495
1 changed files with 1 additions and 7 deletions
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8
net/wireless/core.h
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@ -217,7 +217,6 @@ void cfg80211_register_wdev(struct cfg80211_registered_device *rdev,
static inline void wdev_lock(struct wireless_dev *wdev)
__acquires(wdev)
{
lockdep_assert_held(&wdev->wiphy->mtx);
mutex_lock(&wdev->mtx);
__acquire(wdev->mtx);
}
@ -225,16 +224,11 @@ static inline void wdev_lock(struct wireless_dev *wdev)
static inline void wdev_unlock(struct wireless_dev *wdev)
__releases(wdev)
{
lockdep_assert_held(&wdev->wiphy->mtx);
__release(wdev->mtx);
mutex_unlock(&wdev->mtx);
}
static inline void ASSERT_WDEV_LOCK(struct wireless_dev *wdev)
{
lockdep_assert_held(&wdev->wiphy->mtx);
lockdep_assert_held(&wdev->mtx);
}
#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
{