[05/14] wifi: iwlwifi: mvm: d3: avoid intermediate/early mutex unlock

Commit Message

Miri Korenblit Dec. 20, 2023, 1:29 p.m. UTC

From: Johannes Berg <[e-mail]>

Now with the mac80211 locking model changed, we no longer can
cause any bad dependencies here between mvm->mutex and other
mutexes in mac80211, so we no longer need to drop the mutex
early or even temporarily. Clean this up.

Signed-off-by: Johannes Berg <[e-mail]>
Reviewed-by: Gregory Greenman <[e-mail]>
Signed-off-by: Miri Korenblit <[e-mail]>
---
 drivers/net/wireless/intel/iwlwifi/mvm/d3.c | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)

Patch

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
index 92c45571bd69..4582afb149d7 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
@@ -1130,14 +1130,7 @@  iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
 			return ret;
 	}
 
-	/*
-	 * This needs to be unlocked due to lock ordering
-	 * constraints. Since we're in the suspend path
-	 * that isn't really a problem though.
-	 */
-	mutex_unlock(&mvm->mutex);
 	ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
-	mutex_lock(&mvm->mutex);
 	if (ret)
 		return ret;
 
@@ -2497,7 +2490,7 @@  static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
 					 struct iwl_wowlan_status_data *status)
 {
 	int i;
-	bool keep;
+	bool keep = false;
 	struct iwl_mvm_sta *mvm_ap_sta;
 
 	if (!status)
@@ -2525,18 +2518,12 @@  static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
 				     mvm_ap_sta->tid_data[i].seq_number >> 4);
 	}
 
-	/* now we have all the data we need, unlock to avoid mac80211 issues */
-	mutex_unlock(&mvm->mutex);
-
 	iwl_mvm_report_wakeup_reasons(mvm, vif, status);
 
 	keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
-
-	return keep;
-
 out_unlock:
 	mutex_unlock(&mvm->mutex);
-	return false;
+	return keep;
 }
 
 #define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \