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From:   Jouni Malinen <jouni@codeaurora.org>
To:     Kalle Valo <kvalo@codeaurora.org>
Cc:     ath11k@lists.infradead.org, linux-wireless@vger.kernel.org,
        Wen Gong <wgong@codeaurora.org>,
        Jouni Malinen <jouni@codeaurora.org>
Subject: [PATCH 3/3] ath11k: set correct NL80211_FEATURE_DYNAMIC_SMPS for WCN6855
Date:   Tue, 14 Sep 2021 19:37:26 +0300
Message-Id: <20210914163726.38604-3-jouni@codeaurora.org>
In-Reply-To: <20210914163726.38604-1-jouni@codeaurora.org>
References: <20210914163726.38604-1-jouni@codeaurora.org>
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From: Wen Gong <wgong@codeaurora.org>

Commit "ath11k: support SMPS configuration for 6 GHz" changed "if
(ht_cap & WMI_HT_CAP_DYNAMIC_SMPS)" to "if (ht_cap &
WMI_HT_CAP_DYNAMIC_SMPS || ar->supports_6ghz)" which means
NL80211_FEATURE_DYNAMIC_SMPS is enabled for all chips which support 6
GHz. However, WCN6855 supports 6 GHz but it does not support feature
NL80211_FEATURE_DYNAMIC_SMPS, and this can lead to MU-MIMO test failures
for WCN6855.

Disable NL80211_FEATURE_DYNAMIC_SMPS for WCN6855 since its ht_cap does
not support WMI_HT_CAP_DYNAMIC_SMPS.

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-01720.1-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
---
 drivers/net/wireless/ath/ath11k/core.c | 1 +
 drivers/net/wireless/ath/ath11k/hw.h   | 1 +
 drivers/net/wireless/ath/ath11k/mac.c  | 3 ++-
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c
index 265ff225bd81..2bae8c5184d4 100644
--- a/drivers/net/wireless/ath/ath11k/core.c
+++ b/drivers/net/wireless/ath/ath11k/core.c
@@ -279,6 +279,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.sram_dump = &sram_dump_wcn6855,
 		.max_tx_ring = DP_TCL_NUM_RING_MAX_QCA6390,
 		.hal_params = &ath11k_hal_params_qca6390,
+		.check_dynamic_smps = true,
 	},
 };
 
diff --git a/drivers/net/wireless/ath/ath11k/hw.h b/drivers/net/wireless/ath/ath11k/hw.h
index c6831fb110ba..7463b96770b7 100644
--- a/drivers/net/wireless/ath/ath11k/hw.h
+++ b/drivers/net/wireless/ath/ath11k/hw.h
@@ -180,6 +180,7 @@ struct ath11k_hw_params {
 	const struct ath11k_hw_sram_dump *sram_dump;
 	u8 max_tx_ring;
 	const struct hal_param *hal_params;
+	bool check_dynamic_smps;
 };
 
 struct ath11k_hw_ops {
diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index 1f4765e43546..97a2c92b7b9b 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -7570,7 +7570,8 @@ static int __ath11k_mac_register(struct ath11k *ar)
 	 * for each band for a dual band capable radio. It will be tricky to
 	 * handle it when the ht capability different for each band.
 	 */
-	if (ht_cap & WMI_HT_CAP_DYNAMIC_SMPS || ar->supports_6ghz)
+	if (ht_cap & WMI_HT_CAP_DYNAMIC_SMPS ||
+	    (ar->supports_6ghz && !ab->hw_params.check_dynamic_smps))
 		ar->hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
 
 	ar->hw->wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID;
-- 
2.25.1