Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D1E4CC4332F for ; Tue, 9 Nov 2021 01:01:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C1508619E5 for ; Tue, 9 Nov 2021 01:01:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241790AbhKIBEW (ORCPT ); Mon, 8 Nov 2021 20:04:22 -0500 Received: from mail.kernel.org ([198.145.29.99]:60044 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241710AbhKIBDm (ORCPT ); Mon, 8 Nov 2021 20:03:42 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 4CB2A6134F; Tue, 9 Nov 2021 01:00:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1636419657; bh=j4DogJZl2Vu+zsxMLerayzNIup6aEJcDiqFmY097EUs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jr/BBwlZUhINg51Yg3cpPZcrf+XQEtnjGfJJ3EKze+6vf9sgLpvQcbG6V79j0mEfw sYh3WChTYIV+4WBj2HmMEEtn3uQ/tRcyK44EE/tJIewahdHYmF4I0bsXIgvrCTMO2a ubg7XEF2ntoUDIJzdi7QLGn8ssks595CgKiXFv1MdPVTxRfKyZjeHkLQigJ2E1prfw Vq6AYBgwprkMVMZDfPo/22cAekvSjhBjwdqHZ5igerlM5mTnE9vkVfCCmykehaXNj4 QX2OGL0oFtXvTLSDGwUUKI/Kh+PDPrguyuRmKHzF4T6KB9F87KMDT1wykl5gNyXy3h FQMgHDpe1uLeg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Sriram R , Jouni Malinen , Kalle Valo , Sasha Levin , davem@davemloft.net, kuba@kernel.org, ath11k@lists.infradead.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 033/146] ath11k: Avoid reg rules update during firmware recovery Date: Mon, 8 Nov 2021 12:43:00 -0500 Message-Id: <20211108174453.1187052-33-sashal@kernel.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211108174453.1187052-1-sashal@kernel.org> References: <20211108174453.1187052-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sriram R [ Upstream commit 69a0fcf8a9f2273040d03e5ee77c9689c09e9d3a ] During firmware recovery, the default reg rules which are received via WMI_REG_CHAN_LIST_CC_EVENT can overwrite the currently configured user regd. See below snap for example, root@OpenWrt:/# iw reg get | grep country country FR: DFS-ETSI country FR: DFS-ETSI country FR: DFS-ETSI country FR: DFS-ETSI root@OpenWrt:/# echo assert > /sys/kernel/debug/ath11k/ipq8074\ hw2.0/simulate_f w_crash [ 5290.471696] ath11k c000000.wifi1: pdev 1 successfully recovered root@OpenWrt:/# iw reg get | grep country country FR: DFS-ETSI country US: DFS-FCC country US: DFS-FCC country US: DFS-FCC In the above, the user configured country 'FR' is overwritten when the rules of default country 'US' are received and updated during recovery. Hence avoid processing of these rules in general during firmware recovery as they have been already applied during driver registration or after last set user country is configured. This scenario applies for both AP and STA devices basically because cfg80211 is not aware of the recovery and only the driver recovers, but changing or resetting of the reg domain during recovery is not needed so as to continue with the configured regdomain currently in use. Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01460-QCAHKSWPL_SILICONZ-1 Signed-off-by: Sriram R Signed-off-by: Jouni Malinen Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20210721212029.142388-3-jouni@codeaurora.org Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath11k/wmi.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c index 27c060dd3fb47..fa27115483c6c 100644 --- a/drivers/net/wireless/ath/ath11k/wmi.c +++ b/drivers/net/wireless/ath/ath11k/wmi.c @@ -5793,6 +5793,17 @@ static int ath11k_reg_chan_list_event(struct ath11k_base *ab, struct sk_buff *sk pdev_idx = reg_info->phy_id; + /* Avoid default reg rule updates sent during FW recovery if + * it is already available + */ + spin_lock(&ab->base_lock); + if (test_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags) && + ab->default_regd[pdev_idx]) { + spin_unlock(&ab->base_lock); + goto mem_free; + } + spin_unlock(&ab->base_lock); + if (pdev_idx >= ab->num_radios) { /* Process the event for phy0 only if single_pdev_only * is true. If pdev_idx is valid but not 0, discard the -- 2.33.0