diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2021-01-17 13:10:38 +0200 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2021-02-05 11:52:34 +0200 |
| commit | 00520b7a2a13db5c6b56cc1f49cea4e0e174479c (patch) | |
| tree | 3980f562451283142971d459150444b572fae8b0 /drivers/net/wireless/intel | |
| parent | 6275c77e77b24d583366d54e726c2ae144dc3d1a (diff) | |
iwlwifi: mvm: don't check system_pm_mode without mutex held
When we want to stop TX'ing because we are suspending, we
have two options: either we check system_pm_mode or we
check the mvm's status that has a bit for the suspend
flow.
The latter is better because test_bit is atomic. Also
add a call to synchronize_net after we set the bit to
make sure that all the new Tx see the bit before we
actually complete the suspend flow.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210117130510.243c88781302.I5c0379c5a7e5d49410569e7fcd2fff7a419c6dea@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/d3.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 3 |
2 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c index 550755fb7c2f..cc523fb26f39 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c @@ -997,6 +997,8 @@ static int __iwl_mvm_suspend(struct ieee80211_hw *hw, set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); + synchronize_net(); + vif = iwl_mvm_get_bss_vif(mvm); if (IS_ERR_OR_NULL(vif)) { ret = 1; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index f2bb7776ec7e..947741302e6a 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -816,8 +816,7 @@ void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq) rcu_read_lock(); do { while (likely(!mvmtxq->stopped && - (mvm->trans->system_pm_mode == - IWL_PLAT_PM_MODE_DISABLED))) { + !test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))) { skb = ieee80211_tx_dequeue(hw, txq); if (!skb) { |