• Stanislaw Gruszka's avatar
    rt2x00: disable TKIP on USB · 8edcb0ba
    Stanislaw Gruszka authored
    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: default avatarPeter Wu <lekensteyn@gmail.com>
    Reported-and-tested-by: default avatarPontus Fuchs <pontus.fuchs@gmail.com>
    Signed-off-by: default avatarStanislaw Gruszka <sgruszka@redhat.com>
    Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
    8edcb0ba
rt2x00mac.c 24.3 KB