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| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2014-06-10 12:51:06 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-09 11:21:24 -0700 |
| commit | 1bc13b5b0867ae4567ea7e33f94fe360993ce0c6 (patch) | |
| tree | fede41f5684f9ba4f1cf7a3e38ab92557dd2cf15 /drivers/net | |
| parent | 7416376c48e4324b7461476688a16a125c84ffd7 (diff) | |
| download | lwn-1bc13b5b0867ae4567ea7e33f94fe360993ce0c6.tar.gz lwn-1bc13b5b0867ae4567ea7e33f94fe360993ce0c6.zip | |
rt2x00: disable TKIP on USB
commit 8edcb0ba0d56f5914eef11eda6db8bfe74eb9ca8 upstream.
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]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00mac.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c index a87ee9b6585a..87a8ad5d2eb7 100644 --- a/drivers/net/wireless/rt2x00/rt2x00mac.c +++ b/drivers/net/wireless/rt2x00/rt2x00mac.c @@ -487,6 +487,8 @@ int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, crypto.cipher = rt2x00crypto_key_to_cipher(key); if (crypto.cipher == CIPHER_NONE) return -EOPNOTSUPP; + if (crypto.cipher == CIPHER_TKIP && rt2x00_is_usb(rt2x00dev)) + return -EOPNOTSUPP; crypto.cmd = cmd; |