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    Subject[2.6.31-rc1] iwlagn (4965): regression when hardware rf switch is used
    Date
    (Reported earlier in 'no wireless due to RFKILL problem' thread, but
    Johannes suggested opening a new thread as it is a separate issue.)

    I've tried .31-rc1 on my HP 2510p notebook and noticed a problem when
    using the hardware rf kill switch.

    If disable wireless using the hardware switch and the enable it again
    almost immediately after on 2.6.30, I get:
    [disable]
    iwlagn 0000:10:00.0: Radio Frequency Kill Switch is On:
    Kill switch must be turned off for wireless networking to work.
    usb 3-1: USB disconnect, address 2
    [enable]
    Registered led device: iwl-phy0::radio
    Registered led device: iwl-phy0::assoc
    Registered led device: iwl-phy0::RX
    Registered led device: iwl-phy0::TX
    usb 3-1: new full speed USB device using uhci_hcd and address 3
    usb 3-1: configuration #1 chosen from 1 choice
    wlan0: no probe response from AP 00:14:c1:38:e5:15 - disassociating
    iwlagn 0000:10:00.0: index 0 not used in uCode key table.
    wlan0: authenticate with AP 00:14:c1:38:e5:15
    wlan0: authenticate with AP 00:14:c1:38:e5:15
    wlan0: authenticated
    wlan0: associate with AP 00:14:c1:38:e5:15
    wlan0: RX ReassocResp from 00:14:c1:38:e5:15 (capab=0x411 status=0 aid=1)
    wlan0: associated

    And without any other action networking is up again.


    But with 2.6.31 I get this:
    [disable]
    wlan0: deauthenticating by local choice (reason=3)
    iwlagn 0000:10:00.0: Error sending REPLY_ADD_STA: enqueue_hcmd failed: -5
    mac80211-phy0: failed to remove key (0, 00:14:c1:38:e5:15) from hardware (-5)
    iwlagn 0000:10:00.0: Error sending REPLY_ADD_STA: enqueue_hcmd failed: -5
    mac80211-phy0: failed to remove key (1, ff:ff:ff:ff:ff:ff) from hardware (-5)
    usb 3-1: USB disconnect, address 2
    [enable]
    usb 3-1: new full speed USB device using uhci_hcd and address 3
    usb 3-1: configuration #1 chosen from 1 choice

    A lot uglier with those errors. And after that I have to run ifdown/ifup
    before networking is up again (ifup only does not work as it will complain
    "interface already configured"):

    [ifdown wlan0]
    Registered led device: iwl-phy0::radio
    Registered led device: iwl-phy0::assoc
    Registered led device: iwl-phy0::RX
    Registered led device: iwl-phy0::TX
    ADDRCONF(NETDEV_UP): wlan0: link is not ready
    [ifup wlan 0]
    Registered led device: iwl-phy0::radio
    Registered led device: iwl-phy0::assoc
    Registered led device: iwl-phy0::RX
    Registered led device: iwl-phy0::TX
    ADDRCONF(NETDEV_UP): wlan0: link is not ready
    wlan0: authenticate with AP 00:14:c1:38:e5:15
    wlan0: authenticated
    wlan0: associate with AP 00:14:c1:38:e5:15
    wlan0: RX AssocResp from 00:14:c1:38:e5:15 (capab=0x411 status=0 aid=1)
    wlan0: associated
    ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready

    BTW, would it make sense to bring back the first two lines shown with .30
    (or at least the first one):
    iwlagn 0000:10:00.0: Radio Frequency Kill Switch is On:
    Kill switch must be turned off for wireless networking to work.
    IMHO it's good to register the reason for the disconnect.

    From lspci:
    10:00.0 Network controller [0280]: Intel Corporation PRO/Wireless
    4965 AG or AGN [Kedron] Network Connection [8086:4229] (rev 61)

    Cheers,
    FJP


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