From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from m16.mail.163.com (m16.mail.163.com [220.197.31.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CFE46483823; Mon, 19 Oct 2026 10:11:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=220.197.31.4 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792404684; cv=none; b=vD7p+QwcbP7clavdPC5coF/QE8//sgX+Q5pQZY1T4HVUB6jdLnPN7fE2QVBMUZMWyqc7Ltp+1mKP8vxMTklpR4BT0SLG7noavixNmxt9eQBxvVU2zmxjRfQIeAg+Fch0nTCmlrEwR74JOnrCUF9K96T3lfVkf9Nh46g6Ttx7RXs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792404684; c=relaxed/simple; bh=NEnjTZRjVutXJrjVRSLSlo87OcenfbYtYO0/b7iu8GM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=JlvY8y8VZ7BLIKIU+mZBz7cR/TVKX/aFYdTXOq8p1LXYvHhwIusJm89VexZYsxY7KZyTSZm1i1XDBoqPj0xVDpuqrilVD6vwlwPmoZdG1K+l47mTj7NJQZmGGPUyxrRj2q8T57CSoGYTDm8arRy5qo0P7NVhZegnVO5ukD/e+Ls= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=gJL0OpNc; arc=none smtp.client-ip=220.197.31.4 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="gJL0OpNc" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=2o S/RVUCv332oUW7rywSkFmlGKWorhtvaJVg65N7O3o=; b=gJL0OpNc92zGtVRgKk uvXuIi1Qsmm4ZkyANl4FrVz7EMk+vYK6EjZzfQ69pqAPNZOclIBsDZnrJiqZ2L2v hp/rrxb8aOTmcURAAlrmbcI7ZTTiTYcyq1cZ4Rp5o15wa6+ez/iFnkofuXG3PhRG z186hSrQ4gy8lXnBCLUPeeKGk= Received: from pc.localdomain (unknown []) by gzga-smtp-mtada-g0-3 (Coremail) with SMTP id _____wD3_8Wk7NVq1VPPBA--.45843S3; Mon, 19 Oct 2026 18:10:47 +0800 (CST) From: Jiale Yao To: Felix Fietkau , Lorenzo Bianconi , Ryder Lee , Shayne Chen , Sean Wang , Matthias Brugger , AngeloGioacchino Del Regno , Peter Chiu , Howard Hsu , Bo Jiao , Evelyn Tsai , linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Cc: Jiale Yao Subject: [PATCH 1/2] wifi: mt76: mt7996: clamp VHT/HE beamforming NSS Date: Mon, 19 Oct 2026 18:10:41 +0800 Message-Id: <20261019101043.1922205-2-yaojiale02@163.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20261019101043.1922205-1-yaojiale02@163.com> References: <20261019101043.1922205-1-yaojiale02@163.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:_____wD3_8Wk7NVq1VPPBA--.45843S3 X-Coremail-Antispam: 1Uf129KBjvdXoW7GF1kAw1UXryxuF4Utw43ZFb_yoWfurgE9F navF1SqF48Kr10kr47Aa9xCrySyay8XrykG3y5t3ySga17A3y7uryFvryDJrsrCF17Zr1U GwnxXFyjkayYgjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7VUUjg4PUUUUU== X-CM-SenderInfo: x1dryxhdohiji6rwjhhfrp/xtbCzgd0rmrV7KcemgAA3j A peer can advertise a VHT or HE MCS map with no supported spatial streams. In that case mt7996_mcu_get_sta_nss() decrements zero and produces 255 for the beamforming configuration. Return zero when the MCS map has no supported streams. Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices") Signed-off-by: Jiale Yao --- drivers/net/wireless/mediatek/mt76/mt7996/mcu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c index cd7587ce5b8a..e6243dd33c31 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c @@ -120,7 +120,7 @@ mt7996_mcu_get_sta_nss(u16 mcs_map) break; } - return nss - 1; + return nss ? nss - 1 : 0; } static void -- 2.34.1