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iwlwifi: check the HW when a queue is stuck 

Add more information when a queue is stuck and actually get
information from the scheduler instead of looking at internal
variables.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Emmanuel Grumbach 2011-11-17 16:05:09 -08:00 committed by John W. Linville
parent 1f1d528977
commit 08d1700da0
1 changed files with 5 additions and 1 deletions
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6
drivers/net/wireless/iwlwifi/iwl-trans-pcie.c
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@ -1515,8 +1515,12 @@ static int iwl_trans_pcie_check_stuck_queue(struct iwl_trans *trans, int cnt)
if (time_after(jiffies, timeout)) {
IWL_ERR(trans, "Queue %d stuck for %u ms.\n", q->id,
hw_params(trans).wd_timeout);
IWL_ERR(trans, "Current read_ptr %d write_ptr %d\n",
IWL_ERR(trans, "Current SW read_ptr %d write_ptr %d\n",
q->read_ptr, q->write_ptr);
IWL_ERR(trans, "Current HW read_ptr %d write_ptr %d\n",
iwl_read_prph(bus(trans), SCD_QUEUE_RDPTR(cnt))
& (TFD_QUEUE_SIZE_MAX - 1),
iwl_read_prph(bus(trans), SCD_QUEUE_WRPTR(cnt)));
return 1;
}