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iwlwifi: mvm: disable PS during channel switch 

Disable PS when pre_channel_switch is called and add the
post_channel_switch operation to re-enable PS when the channel switch
is completed.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
This commit is contained in:
Luciano Coelho 2014-11-10 11:10:12 +02:00 committed by Emmanuel Grumbach
parent 7ef0aab66b
commit f6c34820d3
1 changed files with 25 additions and 3 deletions
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28
drivers/net/wireless/iwlwifi/mvm/mac80211.c
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@ -3166,7 +3166,7 @@ static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct ieee80211_vif *csa_vif;
struct iwl_mvm_vif *mvmvif;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
mutex_lock(&mvm->mutex);
@ -3187,7 +3187,6 @@ static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
rcu_assign_pointer(mvm->csa_vif, vif);
mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (WARN_ONCE(mvmvif->csa_countdown,
"Previous CSA countdown didn't complete")) {
ret = -EBUSY;
@ -3199,7 +3198,11 @@ static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
break;
}
ret = 0;
mvmvif->ps_disabled = true;
ret = iwl_mvm_power_update_ps(mvm);
if (ret)
goto out_unlock;
out_unlock:
mutex_unlock(&mvm->mutex);
@ -3207,6 +3210,24 @@ out_unlock:
return ret;
}
static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
mutex_lock(&mvm->mutex);
mvmvif->ps_disabled = false;
ret = iwl_mvm_power_update_ps(mvm);
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u32 queues, bool drop)
{
@ -3300,6 +3321,7 @@ const struct ieee80211_ops iwl_mvm_hw_ops = {
.set_tim = iwl_mvm_set_tim,
.pre_channel_switch = iwl_mvm_pre_channel_switch,
.post_channel_switch = iwl_mvm_post_channel_switch,
.tdls_channel_switch = iwl_mvm_tdls_channel_switch,
.tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,