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    SubjectRe: REGRESSION: v3.2-rcX: iwlagn refuses to associate with my AP's
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    Hi Ted,

    > The failure to associate with access points happens at work, with
    > whatever AP's are in use at the Cambridge Google office. When I tried
    > v3.2-rc5 at home, I was able to associate with a consumer-grade NetGear
    > AP, although it was flaky --- that is, it completely failed to associate
    > initially, but then I tried rebooting and I was eventually able to get
    > it to work. At work, I was able to reproduce the problem with a
    > v3.2-rc5 and v3.2-rc2 kernel, but the problem did not manifest itself
    > with a v3.1 kernel.
    >
    > One interesting thing is that I'm getting the following WARNING message
    > triggering in my dmesg logs:
    >
    > [ 48.518246] wlan0: deauthenticating from 00:1a:1e:26:2b:30 by local choice (r
    > eason=3)
    > [ 48.525625] ------------[ cut here ]------------
    > [ 48.525653] WARNING: at net/wireless/mlme.c:309 __cfg80211_auth_remove+0xc2/0xcf [cfg80211]()

    > This seems to be happening after the failure to associate with the AP,
    > so it could be a red herring.

    I think this is. It's interesting though that it is deauthenticating --
    is there anything in the log before? But since you bisected it to the TX
    sync commit, I'd say let's try the below patch. You might have to adjust
    the iwl-mac80211.c file to iwl-agn.c, I'm not entirely sure what version
    has the moved code.

    Please let me know -- this commit is probably the right thing to do
    until we get rid of tx_sync completely.

    Thanks,
    Johannes

    --- wireless-testing.orig/drivers/net/wireless/iwlwifi/iwl-mac80211.c 2011-12-13 09:06:14.000000000 +0100
    +++ wireless-testing/drivers/net/wireless/iwlwifi/iwl-mac80211.c 2011-12-13 19:20:24.000000000 +0100
    @@ -1014,6 +1014,9 @@ static int iwlagn_mac_tx_sync(struct iee
    int ret;
    u8 sta_id;

    + if (!vif->p2p)
    + return 0;
    +
    IWL_DEBUG_MAC80211(priv, "enter\n");
    mutex_lock(&priv->shrd->mutex);

    @@ -1063,6 +1066,9 @@ static void iwlagn_mac_finish_tx_sync(st
    struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
    struct iwl_rxon_context *ctx = vif_priv->ctx;

    + if (!vif->p2p)
    + return;
    +
    IWL_DEBUG_MAC80211(priv, "enter\n");
    mutex_lock(&priv->shrd->mutex);




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