From patchwork Tue Aug 9 08:41:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ping-Ke Shih X-Patchwork-Id: 596429 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CBF4DC25B0E for ; Tue, 9 Aug 2022 08:41:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240977AbiHIIlr (ORCPT ); Tue, 9 Aug 2022 04:41:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44134 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240945AbiHIIlk (ORCPT ); Tue, 9 Aug 2022 04:41:40 -0400 Received: from rtits2.realtek.com.tw (rtits2.realtek.com [211.75.126.72]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 6C9A86359 for ; Tue, 9 Aug 2022 01:41:39 -0700 (PDT) Authenticated-By: X-SpamFilter-By: ArmorX SpamTrap 5.77 with qID 2798fEL81006240, This message is accepted by code: ctloc85258 Received: from mail.realtek.com (rtexh36504.realtek.com.tw[172.21.6.27]) by rtits2.realtek.com.tw (8.15.2/2.81/5.90) with ESMTPS id 2798fEL81006240 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=FAIL); Tue, 9 Aug 2022 16:41:14 +0800 Received: from RTEXMBS04.realtek.com.tw (172.21.6.97) by RTEXH36504.realtek.com.tw (172.21.6.27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.7; Tue, 9 Aug 2022 16:41:24 +0800 Received: from localhost (172.16.16.191) by RTEXMBS04.realtek.com.tw (172.21.6.97) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.7; Tue, 9 Aug 2022 16:41:23 +0800 From: Ping-Ke Shih To: , CC: , Subject: [PATCH v2 2/7] wifi: rtw88: add mutex when set regulatory and get Tx power table Date: Tue, 9 Aug 2022 16:41:02 +0800 Message-ID: <20220809084107.38137-3-pkshih@realtek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220809084107.38137-1-pkshih@realtek.com> References: <20220809084107.38137-1-pkshih@realtek.com> MIME-Version: 1.0 X-Originating-IP: [172.16.16.191] X-ClientProxiedBy: RTEXMBS02.realtek.com.tw (172.21.6.95) To RTEXMBS04.realtek.com.tw (172.21.6.97) X-KSE-ServerInfo: RTEXMBS04.realtek.com.tw, 9 X-KSE-AntiSpam-Interceptor-Info: trusted connection X-KSE-Antiphishing-Info: Clean X-KSE-Antiphishing-ScanningType: Deterministic X-KSE-Antiphishing-Method: None X-KSE-Antiphishing-Bases: 08/09/2022 08:22:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: =?big5_tw?b?Q2xlYW4sIGJhc2VzOiAyMDIyLzgvOSCkV6TIIDA2OjU1?= =?big5_tw?b?OjAw?= X-KSE-BulkMessagesFiltering-Scan-Result: protection disabled X-KSE-ServerInfo: RTEXH36504.realtek.com.tw, 9 X-KSE-AntiSpam-Interceptor-Info: fallback X-KSE-Antivirus-Interceptor-Info: fallback X-KSE-AntiSpam-Interceptor-Info: fallback Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Chih-Kang Chang Applying regulatory and getting Tx power table will access hal data, it should hold rtwdev::mutex to avoid hal data changed during setting flow. Signed-off-by: Chih-Kang Chang Signed-off-by: Ping-Ke Shih --- drivers/net/wireless/realtek/rtw88/debug.c | 11 +++++++---- drivers/net/wireless/realtek/rtw88/regd.c | 2 ++ 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/realtek/rtw88/debug.c b/drivers/net/wireless/realtek/rtw88/debug.c index 7cde6bcf253b4..9ebe544e51d0d 100644 --- a/drivers/net/wireless/realtek/rtw88/debug.c +++ b/drivers/net/wireless/realtek/rtw88/debug.c @@ -621,11 +621,13 @@ static int rtw_debugfs_get_tx_pwr_tbl(struct seq_file *m, void *v) struct rtw_debugfs_priv *debugfs_priv = m->private; struct rtw_dev *rtwdev = debugfs_priv->rtwdev; struct rtw_hal *hal = &rtwdev->hal; - u8 path, rate; + u8 path, rate, bw, ch, regd; struct rtw_power_params pwr_param = {0}; - u8 bw = hal->current_band_width; - u8 ch = hal->current_channel; - u8 regd = rtw_regd_get(rtwdev); + + mutex_lock(&rtwdev->mutex); + bw = hal->current_band_width; + ch = hal->current_channel; + regd = rtw_regd_get(rtwdev); seq_printf(m, "channel: %u\n", ch); seq_printf(m, "bandwidth: %u\n", bw); @@ -667,6 +669,7 @@ static int rtw_debugfs_get_tx_pwr_tbl(struct seq_file *m, void *v) } mutex_unlock(&hal->tx_power_mutex); + mutex_unlock(&rtwdev->mutex); return 0; } diff --git a/drivers/net/wireless/realtek/rtw88/regd.c b/drivers/net/wireless/realtek/rtw88/regd.c index 315c2b193e92c..2f547cbcf6da5 100644 --- a/drivers/net/wireless/realtek/rtw88/regd.c +++ b/drivers/net/wireless/realtek/rtw88/regd.c @@ -479,6 +479,7 @@ void rtw_regd_notifier(struct wiphy *wiphy, struct regulatory_request *request) rtw_dbg(rtwdev, RTW_DBG_REGD, "regd state: %d -> %d\n", rtwdev->regd.state, next_regd.state); + mutex_lock(&rtwdev->mutex); rtwdev->regd = next_regd; rtw_dbg_regd_dump(rtwdev, "get alpha2 %c%c from initiator %d: ", request->alpha2[0], @@ -487,6 +488,7 @@ void rtw_regd_notifier(struct wiphy *wiphy, struct regulatory_request *request) rtw_phy_adaptivity_set_mode(rtwdev); rtw_phy_set_tx_power_level(rtwdev, hal->current_channel); + mutex_unlock(&rtwdev->mutex); } u8 rtw_regd_get(struct rtw_dev *rtwdev)