Currently ath11k_mac_get_fw_stats() is acquiring/releasing ar->conf_mutex by itself.
In order to reuse this function in a context where that lock is already taken, move
lock handling to its callers, then the function itself only has to assert it.
There is only one caller now, i.e., ath11k_mac_op_sta_statistics(), so add lock handling
there.
Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.37
Signed-off-by: Baochen Qiang <quic_bqiang@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath11k/mac.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index 318fd0bb6fe5..0ff430931bfd 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -9007,12 +9007,10 @@ static int ath11k_mac_get_fw_stats(struct ath11k *ar, u32 pdev_id,
struct stats_request_params req_param;
int ret;
- mutex_lock(&ar->conf_mutex);
+ lockdep_assert_held(&ar->conf_mutex);
- if (ar->state != ATH11K_STATE_ON) {
- ret = -ENETDOWN;
- goto err_unlock;
- }
+ if (ar->state != ATH11K_STATE_ON)
+ return -ENETDOWN;
req_param.pdev_id = pdev_id;
req_param.vdev_id = vdev_id;
@@ -9026,9 +9024,6 @@ static int ath11k_mac_get_fw_stats(struct ath11k *ar, u32 pdev_id,
"debug get fw stat pdev id %d vdev id %d stats id 0x%x\n",
pdev_id, vdev_id, stats_id);
-err_unlock:
- mutex_unlock(&ar->conf_mutex);
-
return ret;
}
@@ -9066,6 +9061,7 @@ static void ath11k_mac_op_sta_statistics(struct ieee80211_hw *hw,
ath11k_mac_put_chain_rssi(sinfo, arsta, "ppdu", false);
+ mutex_lock(&ar->conf_mutex);
if (!(sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) &&
arsta->arvif->vdev_type == WMI_VDEV_TYPE_STA &&
ar->ab->hw_params.supports_rssi_stats &&
@@ -9081,6 +9077,7 @@ static void ath11k_mac_op_sta_statistics(struct ieee80211_hw *hw,
!(ath11k_mac_get_fw_stats(ar, ar->pdev->pdev_id, 0,
WMI_REQUEST_VDEV_STAT)))
signal = arsta->rssi_beacon;
+ mutex_unlock(&ar->conf_mutex);
ath11k_dbg(ar->ab, ATH11K_DBG_MAC,
"sta statistics db2dbm %u rssi comb %d rssi beacon %d\n",
--
2.25.1
