diff options
author | Johannes Berg <johannes.berg@intel.com> | 2012-03-04 17:50:46 +0100 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2012-03-06 21:16:07 +0100 |
commit | 342bbf3fee2fa9a18147e74b2e3c4229a4564912 (patch) | |
tree | 805d39cf32bae1ff6a77e054d8959c3cce50f1c4 | |
parent | p54pci: use new driver.pm interface for suspend/resume (diff) | |
download | linux-342bbf3fee2fa9a18147e74b2e3c4229a4564912.tar.xz linux-342bbf3fee2fa9a18147e74b2e3c4229a4564912.zip |
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
It happens more with P2P because there we can
go between associated/unassociated frequently.
Cc: stable@vger.kernel.org
Reported-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-core.c | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index 275e08966059..8551c95e7437 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -1345,20 +1345,10 @@ void iwl_bg_watchdog(unsigned long data) if (timeout == 0) return; - /* monitor and check for stuck cmd queue */ - if (iwl_check_stuck_queue(priv, priv->shrd->cmd_queue)) - return; - - /* monitor and check for other stuck queues */ - if (iwl_is_any_associated(priv)) { - for (cnt = 0; cnt < hw_params(priv).max_txq_num; cnt++) { - /* skip as we already checked the command queue */ - if (cnt == priv->shrd->cmd_queue) - continue; - if (iwl_check_stuck_queue(priv, cnt)) - return; - } - } + /* monitor and check for stuck queues */ + for (cnt = 0; cnt < hw_params(priv).max_txq_num; cnt++) + if (iwl_check_stuck_queue(priv, cnt)) + return; mod_timer(&priv->watchdog, jiffies + msecs_to_jiffies(IWL_WD_TICK(timeout))); |