Stanislaw Gruszka
8edcb0ba0d
rt2x00: disable TKIP on USB
On USB we can not get atomically TKIP key. We have to disable support
for TKIP acceleration on USB hardware to avoid bug as showed bellow.
[ 860.827243] BUG: scheduling while atomic: hostapd/3397/0x00000002
<snip>
[ 860.827280] Call Trace:
[ 860.827282] [<ffffffff81682ea6>] dump_stack+0x4d/0x66
[ 860.827284] [<ffffffff8167eb9b>] __schedule_bug+0x47/0x55
[ 860.827285] [<ffffffff81685bb3>] __schedule+0x733/0x7b0
[ 860.827287] [<ffffffff81685c59>] schedule+0x29/0x70
[ 860.827289] [<ffffffff81684f8a>] schedule_timeout+0x15a/0x2b0
[ 860.827291] [<ffffffff8105ac50>] ? ftrace_raw_event_tick_stop+0xc0/0xc0
[ 860.827294] [<ffffffff810c13c2>] ? __module_text_address+0x12/0x70
[ 860.827296] [<ffffffff81686823>] wait_for_completion_timeout+0xb3/0x140
[ 860.827298] [<ffffffff81080fc0>] ? wake_up_state+0x20/0x20
[ 860.827301] [<ffffffff814d5b3d>] usb_start_wait_urb+0x7d/0x150
[ 860.827303] [<ffffffff814d5cd5>] usb_control_msg+0xc5/0x110
[ 860.827305] [<ffffffffa02fb0c6>] rt2x00usb_vendor_request+0xc6/0x160 [rt2x00usb]
[ 860.827307] [<ffffffffa02fb215>] rt2x00usb_vendor_req_buff_lock+0x75/0x150 [rt2x00usb]
[ 860.827309] [<ffffffffa02fb393>] rt2x00usb_vendor_request_buff+0xa3/0xe0 [rt2x00usb]
[ 860.827311] [<ffffffffa023d1a3>] rt2x00usb_register_multiread+0x33/0x40 [rt2800usb]
[ 860.827314] [<ffffffffa05805f9>] rt2800_get_tkip_seq+0x39/0x50 [rt2800lib]
[ 860.827321] [<ffffffffa0480f88>] ieee80211_get_key+0x218/0x2a0 [mac80211]
[ 860.827322] [<ffffffff815cc68c>] ? __nlmsg_put+0x6c/0x80
[ 860.827329] [<ffffffffa051b02e>] nl80211_get_key+0x22e/0x360 [cfg80211]
Cc: stable@vger.kernel.org
Reported-and-tested-by: Peter Wu <lekensteyn@gmail.com>
Reported-and-tested-by: Pontus Fuchs <pontus.fuchs@gmail.com>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-06-16 11:23:33 -04:00
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