[PATCH 6.10 014/634] wifi: ath12k: fix invalid AMPDU factor calculation in ath12k_peer_assoc_h_he()

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6.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Baochen Qiang <quic_bqiang@xxxxxxxxxxx>

[ Upstream commit a66de2d0f22b1740f3f9777776ad98c4bee62dff ]

Currently ampdu_factor is wrongly calculated in ath12k_peer_assoc_h_he(), fix it.

This is found during code review.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4

Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices")
Signed-off-by: Baochen Qiang <quic_bqiang@xxxxxxxxxxx>
Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx>
Link: https://patch.msgid.link/20240710021819.87216-1-quic_bqiang@xxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/wireless/ath/ath12k/mac.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 7037004ce9771..818ee74cf7a05 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -1948,9 +1948,8 @@ static void ath12k_peer_assoc_h_he(struct ath12k *ar,
 	 * request, then use MAX_AMPDU_LEN_FACTOR as 16 to calculate max_ampdu
 	 * length.
 	 */
-	ampdu_factor = (he_cap->he_cap_elem.mac_cap_info[3] &
-			IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK) >>
-			IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK;
+	ampdu_factor = u8_get_bits(he_cap->he_cap_elem.mac_cap_info[3],
+				   IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK);
 
 	if (ampdu_factor) {
 		if (sta->deflink.vht_cap.vht_supported)
-- 
2.43.0







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