• Cong Wang's avatar
    wl1251: add a missing spin_lock_init() · d767ccb7
    Cong Wang authored
    commit f581a0dd upstream.
    
    wl1251: add a missing spin_lock_init()
    
    This fixes the following kernel warning:
    
     [ 5668.771453] BUG: spinlock bad magic on CPU#0, kworker/u2:3/9745
     [ 5668.771850]  lock: 0xce63ef20, .magic: 00000000, .owner: <none>/-1,
     .owner_cpu: 0
     [ 5668.772277] CPU: 0 PID: 9745 Comm: kworker/u2:3 Tainted: G        W
     4.12.0-03002-gec979a4-dirty #40
     [ 5668.772796] Hardware name: Nokia RX-51 board
     [ 5668.773071] Workqueue: phy1 wl1251_irq_work
     [ 5668.773345] [<c010c9e4>] (unwind_backtrace) from [<c010a274>]
     (show_stack+0x10/0x14)
     [ 5668.773803] [<c010a274>] (show_stack) from [<c01545a4>]
     (do_raw_spin_lock+0x6c/0xa0)
     [ 5668.774230] [<c01545a4>] (do_raw_spin_lock) from [<c06ca578>]
     (_raw_spin_lock_irqsave+0x10/0x18)
     [ 5668.774658] [<c06ca578>] (_raw_spin_lock_irqsave) from [<c048c010>]
     (wl1251_op_tx+0x38/0x5c)
     [ 5668.775115] [<c048c010>] (wl1251_op_tx) from [<c06a12e8>]
     (ieee80211_tx_frags+0x188/0x1c0)
     [ 5668.775543] [<c06a12e8>] (ieee80211_tx_frags) from [<c06a138c>]
     (__ieee80211_tx+0x6c/0x130)
     [ 5668.775970] [<c06a138c>] (__ieee80211_tx) from [<c06a3dbc>]
     (ieee80211_tx+0xdc/0x104)
     [ 5668.776367] [<c06a3dbc>] (ieee80211_tx) from [<c06a4af0>]
     (__ieee80211_subif_start_xmit+0x454/0x8c8)
     [ 5668.776824] [<c06a4af0>] (__ieee80211_subif_start_xmit) from
     [<c06a4f94>] (ieee80211_subif_start_xmit+0x30/0x2fc)
     [ 5668.777343] [<c06a4f94>] (ieee80211_subif_start_xmit) from
     [<c0578848>] (dev_hard_start_xmit+0x80/0x118)
    ...
    
        by adding the missing spin_lock_init().
    Reported-by: default avatarPavel Machek <pavel@ucw.cz>
    Cc: Kalle Valo <kvalo@codeaurora.org>
    Signed-off-by: default avatarCong Wang <xiyou.wangcong@gmail.com>
    Acked-by: default avatarPavel Machek <pavel@ucw.cz>
    Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
    Signed-off-by: default avatarPavel Machek <pavel@ucw.cz>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    d767ccb7
main.c 35.8 KB