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* a fix for the stuck TFD queue mechanism - it was producing

Browse source 
noisy false alarms.
 * a fix for the NIC prepare flow that prevented the driver
   from being able to access the device on certain systems.
 * a fix for the scan prority handling which allows the
   regular scan to run even if a scheduled scan is already
   running.
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Merge tag 'iwlwifi-for-kalle-2015-07-30' of https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-fixes

* a fix for the stuck TFD queue mechanism - it was producing
  noisy false alarms.
* a fix for the NIC prepare flow that prevented the driver
  from being able to access the device on certain systems.
* a fix for the scan prority handling which allows the
  regular scan to run even if a scheduled scan is already
  running.
This commit is contained in:
Kalle Valo 2015-07-31 09:20:12 +03:00
parent df2cd4586f aecdc63d87
commit f7c0af8247
3 changed files with 33 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/net/wireless/iwlwifi/mvm/scan.c
View file

@ -1023,7 +1023,7 @@ static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
cmd->scan_priority =
iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6);
if (iwl_mvm_scan_total_iterations(params) == 0)
if (iwl_mvm_scan_total_iterations(params) == 1)
cmd->ooc_priority =
iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6);
else

22
drivers/net/wireless/iwlwifi/pcie/trans.c
View file

@ -478,10 +478,16 @@ static void iwl_pcie_apm_stop(struct iwl_trans *trans, bool op_mode_leave)
if (trans->cfg->device_family == IWL_DEVICE_FAMILY_7000)
iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG,
APMG_PCIDEV_STT_VAL_WAKE_ME);
else if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
else if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) {
iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
CSR_RESET_LINK_PWR_MGMT_DISABLED);
iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_PREPARE |
CSR_HW_IF_CONFIG_REG_ENABLE_PME);
mdelay(1);
iwl_clear_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
CSR_RESET_LINK_PWR_MGMT_DISABLED);
}
mdelay(5);
}
@ -575,6 +581,10 @@ static int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
if (ret >= 0)
return 0;
iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
CSR_RESET_LINK_PWR_MGMT_DISABLED);
msleep(1);
for (iter = 0; iter < 10; iter++) {
/* If HW is not ready, prepare the conditions to check again */
iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
@ -582,8 +592,10 @@ static int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
do {
ret = iwl_pcie_set_hw_ready(trans);
if (ret >= 0)
return 0;
if (ret >= 0) {
ret = 0;
goto out;
}
usleep_range(200, 1000);
t += 200;
@ -593,6 +605,10 @@ static int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
IWL_ERR(trans, "Couldn't prepare the card\n");
out:
iwl_clear_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
CSR_RESET_LINK_PWR_MGMT_DISABLED);
return ret;
}

15
drivers/net/wireless/iwlwifi/pcie/tx.c
View file

@ -1875,8 +1875,19 @@ int iwl_trans_pcie_tx(struct iwl_trans *trans, struct sk_buff *skb,
/* start timer if queue currently empty */
if (q->read_ptr == q->write_ptr) {
if (txq->wd_timeout)
mod_timer(&txq->stuck_timer, jiffies + txq->wd_timeout);
if (txq->wd_timeout) {
/*
* If the TXQ is active, then set the timer, if not,
* set the timer in remainder so that the timer will
* be armed with the right value when the station will
* wake up.
*/
if (!txq->frozen)
mod_timer(&txq->stuck_timer,
jiffies + txq->wd_timeout);
else
txq->frozen_expiry_remainder = txq->wd_timeout;
}
IWL_DEBUG_RPM(trans, "Q: %d first tx - take ref\n", q->id);
iwl_trans_pcie_ref(trans);
}