提交 480acbce 编写于 作者: J Johannes Berg 提交者: Emmanuel Grumbach

iwlwifi: mvm: flush queues without mutex held

For WMM-AC we may have to be changing QoS parameters while the
queues are being flushed. This is not relevant in the "drop"
case, but matters when we wait for the device to finish the
transmissions.

To allow this, do the actual waiting without holding the mutex.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>
上级 f85e9d19
......@@ -2997,18 +2997,24 @@ static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
mvmvif = iwl_mvm_vif_from_mac80211(vif);
mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
if (WARN_ON_ONCE(!mvmsta))
goto done;
if (WARN_ON_ONCE(!mvmsta)) {
mutex_unlock(&mvm->mutex);
return;
}
if (drop) {
if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
IWL_ERR(mvm, "flush request fail\n");
mutex_unlock(&mvm->mutex);
} else {
iwl_trans_wait_tx_queue_empty(mvm->trans,
mvmsta->tfd_queue_msk);
u32 tfd_queue_msk = mvmsta->tfd_queue_msk;
mutex_unlock(&mvm->mutex);
/* this can take a while, and we may need/want other operations
* to succeed while doing this, so do it without the mutex held
*/
iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_queue_msk);
}
done:
mutex_unlock(&mvm->mutex);
}
const struct ieee80211_ops iwl_mvm_hw_ops = {
......
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