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iwlegacy: always monitor for stuck queues

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This is iwlegacy version of:

commit 342bbf3fee2fa9a18147e74b2e3c4229a4564912
Author: Johannes Berg <johannes.berg@intel.com>
Date:   Sun Mar 4 08:50:46 2012 -0800

    iwlwifi: always monitor for stuck queues

    If we only monitor while associated, the following
    can happen:
     - we're associated, and the queue stuck check
       runs, setting the queue "touch" time to X
     - we disassociate, stopping the monitoring,
       which leaves the time set to X
     - almost 2s later, we associate, and enqueue
       a frame
     - before the frame is transmitted, we monitor
       for stuck queues, and find the time set to
       X, although it is now later than X + 2000ms,
       so we decide that the queue is stuck and
       erroneously restart the device

Cc: stable@vger.kernel.org
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Stanislaw Gruszka 2012-07-04 13:20:20 +02:00 committed by John W. Linville
parent efd821182c
commit c2ca7d92ed
1 changed files with 6 additions and 8 deletions
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14
drivers/net/wireless/iwlegacy/common.c
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@ -4767,14 +4767,12 @@ il_bg_watchdog(unsigned long data)
return;
/* monitor and check for other stuck queues */
if (il_is_any_associated(il)) {
for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) {
/* skip as we already checked the command queue */
if (cnt == il->cmd_queue)
continue;
if (il_check_stuck_queue(il, cnt))
return;
}
for (cnt = 0; cnt < il->hw_params.max_txq_num; cnt++) {
/* skip as we already checked the command queue */
if (cnt == il->cmd_queue)
continue;
if (il_check_stuck_queue(il, cnt))
return;
}
mod_timer(&il->watchdog,