[PATCH 8/8] wifi: ath12k: avoid redundant code in DP Rx error process

[Kalle Valo <kvalo@kernel.org>]

From: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>

Currently, in DP rx error processing, the MAC id is fetched redundantly from
the same descriptor for each MSDU. To avoid this redundancy, move the fetch
handling before the iteration.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/dp_rx.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/dp_rx.c b/drivers/net/wireless/ath/ath12k/dp_rx.c
index b24d1de4aabb..2c919503ddef 100644
--- a/drivers/net/wireless/ath/ath12k/dp_rx.c
+++ b/drivers/net/wireless/ath/ath12k/dp_rx.c
@@ -3516,6 +3516,13 @@ int ath12k_dp_rx_process_err(struct ath12k_base *ab, struct napi_struct *napi,
 				    ret);
 			continue;
 		}
+
+		mac_id = le32_get_bits(reo_desc->info0,
+				       HAL_REO_DEST_RING_INFO0_SRC_LINK_ID);
+
+		pdev_id = ath12k_hw_mac_id_to_pdev_id(ab->hw_params, mac_id);
+		ar = ab->pdevs[pdev_id].ar;
+
 		link_desc_va = link_desc_banks[desc_bank].vaddr +
 			       (paddr - link_desc_banks[desc_bank].paddr);
 		ath12k_hal_rx_msdu_link_info_get(link_desc_va, &num_msdus, msdu_cookies,
@@ -3544,12 +3551,6 @@ int ath12k_dp_rx_process_err(struct ath12k_base *ab, struct napi_struct *napi,
 		}
 
 		for (i = 0; i < num_msdus; i++) {
-			mac_id = le32_get_bits(reo_desc->info0,
-					       HAL_REO_DEST_RING_INFO0_SRC_LINK_ID);
-
-			pdev_id = ath12k_hw_mac_id_to_pdev_id(ab->hw_params, mac_id);
-			ar = ab->pdevs[pdev_id].ar;
-
 			if (!ath12k_dp_process_rx_err_buf(ar, reo_desc,
 							  &rx_desc_used_list,
 							  drop,
-- 
2.39.5