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authorVladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>2014-08-06 10:32:00 +0300
committerJohn W. Linville <linville@tuxdriver.com>2014-08-25 16:17:38 -0400
commit48e81a15fa40dce4553ae3156e170a2be9562fa9 (patch)
tree0604460e334682649f11960b8a979136b7939f4f /drivers/net/wireless/ath/wil6210/wmi.c
parent8fcfdeac97ee3ee8dd8e0e44b6a3b9d49b951bbd (diff)
wil6210: cfg80211_rx_mgmt to use GFP_ATOMIC
Internally, cfg80211_rx_mgmt() takes lock: spin_lock_bh(&wdev->mgmt_registrations_lock); and therefore one can't use it with GFP_KERNEL allocation flags. When called with GFP_KERNEL, "sleep while atomic" warning triggered: <3>[242645.446224] BUG: sleeping function called from invalid context at kernel/mm/slub.c:926 <3>[242645.455516] in_atomic(): 1, irqs_disabled(): 0, pid: 18881, name: kworker/u16:0 <6>[242645.462868] CPU: 0 PID: 18881 Comm: kworker/u16:0 Tainted: G O 3.10.40-g619a884-00001-g357fa9c #2 <6>[242645.463044] Workqueue: wil6210_wmi wmi_event_worker [wil6210] <6>[242645.463087] Call trace: <6>[242645.463157] [<ffffffc000087390>] dump_backtrace+0x0/0x144 <6>[242645.463205] [<ffffffc0000874e4>] show_stack+0x10/0x1c <6>[242645.463259] [<ffffffc0009abc04>] dump_stack+0x1c/0x28 <6>[242645.463313] [<ffffffc0000c10c0>] __might_sleep+0xe0/0xf0 <6>[242645.463365] [<ffffffc00015a514>] kmem_cache_alloc+0x48/0x1e4 <6>[242645.463414] [<ffffffc00080d468>] __alloc_skb+0x48/0x164 <6>[242645.463466] [<ffffffc00097f2c4>] nl80211_send_mgmt+0x4c/0x1dc <6>[242645.463511] [<ffffffc000980268>] cfg80211_rx_mgmt+0x1bc/0x25c <6>[242645.463647] [<ffffffbffc005d64>] wmi_evt_rx_mgmt+0x21c/0x23c [wil6210] <6>[242645.463783] [<ffffffbffc0073b8>] wmi_event_worker+0x230/0x2f8 [wil6210] <6>[242645.463838] [<ffffffc0000afffc>] process_one_work+0x258/0x3d0 <6>[242645.463887] [<ffffffc0000b0fe0>] worker_thread+0x1f0/0x310 <6>[242645.463946] [<ffffffc0000b642c>] kthread+0xac/0xb8 Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/wil6210/wmi.c')
-rw-r--r--drivers/net/wireless/ath/wil6210/wmi.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c
index 596d6c1e8583..1b64823544eb 100644
--- a/drivers/net/wireless/ath/wil6210/wmi.c
+++ b/drivers/net/wireless/ath/wil6210/wmi.c
@@ -355,7 +355,7 @@ static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len)
}
} else {
cfg80211_rx_mgmt(wil->wdev, freq, signal,
- (void *)rx_mgmt_frame, d_len, 0, GFP_KERNEL);
+ (void *)rx_mgmt_frame, d_len, 0, GFP_ATOMIC);
}
}