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iwlwifi: mvm: reflect TDLS pm state in mvmvif->pm_enabled 

When entering D0i3, the MVM mutex cannot be grabbed. This interferes
with the calculation of the number of connected TDLS stations during
the setup of the power cmd.
The goal is to disable power saving for all vifs while any TDLS station
is connected. For this purpose it is enough to keep the pm_enabled
member of all mvmvifs as false. An update of the power state already
occurs when a TDLS station is added/removed, so the values are correctly
updated.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Arik Nemtsov 2015-02-22 19:15:04 +02:00 committed by Emmanuel Grumbach
parent 9beda94059
commit fcf23352e0
1 changed files with 5 additions and 1 deletions
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6
drivers/net/wireless/iwlwifi/mvm/power.c
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@ -357,7 +357,7 @@ static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm,
cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK);
if (!vif->bss_conf.ps || iwl_mvm_vif_low_latency(mvmvif) ||
!mvmvif->pm_enabled || iwl_mvm_tdls_sta_count(mvm, vif))
!mvmvif->pm_enabled)
return;
cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK);
@ -638,6 +638,10 @@ static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm,
if (vifs->ap_vif)
ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif);
/* don't allow PM if any TDLS stations exist */
if (iwl_mvm_tdls_sta_count(mvm, NULL))
return;
/* enable PM on bss if bss stand alone */
if (vifs->bss_active && !vifs->p2p_active && !vifs->ap_active) {
bss_mvmvif->pm_enabled = true;