From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B7C67C636C9 for ; Sat, 17 Jul 2021 20:41:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A5A7161103 for ; Sat, 17 Jul 2021 20:41:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236053AbhGQUoj (ORCPT ); Sat, 17 Jul 2021 16:44:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46106 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235625AbhGQUoS (ORCPT ); Sat, 17 Jul 2021 16:44:18 -0400 Received: from mail-wm1-x32e.google.com (mail-wm1-x32e.google.com [IPv6:2a00:1450:4864:20::32e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0BF85C061765; Sat, 17 Jul 2021 13:41:17 -0700 (PDT) Received: by mail-wm1-x32e.google.com with SMTP id l6so7879182wmq.0; Sat, 17 Jul 2021 13:41:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=x+Od9A6k+Mx3oOsy+sHLyJqYPR0woYwsH4hDTgPiCu4=; b=ixN4prt3eNJpDmPoxtWXzP5O/6zEOsVyObd2lNpRe21XGp2P2g9HFHzGghz2jAzQrD zAHG/n0DHWHi4u2hUTQorjYgtSCG8H8E0JMpt14c6NC6wt1gQLzwSp/nb/OqlTsycxlw ZOFOVH/zsuzdmu/M0U/EHzbi6eQJ/Yz4MR1XaW8qv9j2F8jjt3FlOqYHGSvpnReJwt8p BlfRGk+8fhjwmoVqfVpYhXWElJSkAaQdJLw/Y2SXiIiptUprqXLWK08tigzIokT3VUDU PJACRweHK4Q1KXbTW44ZLzKMgDX2l9QLRqw2e8hxUitft9lkRgEhNqjn4MoYhm3mSxQ2 DHKw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=x+Od9A6k+Mx3oOsy+sHLyJqYPR0woYwsH4hDTgPiCu4=; b=gJp/zpdDxF9gR8zg4qfQtzYxbYUq7K1W8hrZ6XhzkCXNGsjr5b0xkTNbaM3TCAUxkm l/34m932nKVEK1CAiIXu59MciEgq2BMu0OdhUAWM+Y9Q4K8NWUQj2sf2UiuGNbZ5YMpd UoDUm1Z0SOsS45y0jEecPHcUTKxZm7y2sIKMKo2Dd4P6MwpMI+Wv74WGi3OjauvO5GqD 7GqTGLCkLHpNZWTZEFzvOzLUcp4KkrBxrj1cBpayHNmt0aPlfgGBKoboWqPBnVGBX7vc NkoRLQCNGecUSjfq//MuPv8a/kmBCkOAMKl9v8AJDwgK1F4D4ULfv93dI39Jmucfhalq 4w7A== X-Gm-Message-State: AOAM530fUDNfsnPA2rERlxPxAdX5tgM9/P1NmpE5rc+lv25Ylgmi+a9Q WCw+75jide1CtgP5l6Vh/xdjUXEDalc= X-Google-Smtp-Source: ABdhPJzueVEA9BIVnzs7TNWEnkDDpPoK5NYiOKp4BBh+CURWQw6f+dQ2x8Lp+wiXIMfRN4/1y6vjeQ== X-Received: by 2002:a05:600c:214a:: with SMTP id v10mr22951878wml.17.1626554475512; Sat, 17 Jul 2021 13:41:15 -0700 (PDT) Received: from localhost.localdomain (dynamic-2a01-0c22-7602-4e00-f22f-74ff-fe21-0725.c22.pool.telefonica.de. [2a01:c22:7602:4e00:f22f:74ff:fe21:725]) by smtp.googlemail.com with ESMTPSA id n7sm14078357wmq.37.2021.07.17.13.41.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 17 Jul 2021 13:41:15 -0700 (PDT) From: Martin Blumenstingl To: linux-wireless@vger.kernel.org Cc: tony0620emma@gmail.com, kvalo@codeaurora.org, johannes@sipsolutions.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Neo Jou , Jernej Skrabec , Martin Blumenstingl Subject: [PATCH RFC v1 5/7] rtw88: Configure the registers from rtw_bf_assoc() outside the RCU lock Date: Sat, 17 Jul 2021 22:40:55 +0200 Message-Id: <20210717204057.67495-6-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210717204057.67495-1-martin.blumenstingl@googlemail.com> References: <20210717204057.67495-1-martin.blumenstingl@googlemail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Upcoming SDIO support may sleep in the read/write handlers. Configure the chip's BFEE configuration set from rtw_bf_assoc() outside the rcu_read_lock section to prevent a "scheduling while atomic" issue. Signed-off-by: Martin Blumenstingl --- drivers/net/wireless/realtek/rtw88/bf.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/realtek/rtw88/bf.c b/drivers/net/wireless/realtek/rtw88/bf.c index aff70e4ae028..06034d5d6f6c 100644 --- a/drivers/net/wireless/realtek/rtw88/bf.c +++ b/drivers/net/wireless/realtek/rtw88/bf.c @@ -39,6 +39,7 @@ void rtw_bf_assoc(struct rtw_dev *rtwdev, struct ieee80211_vif *vif, struct ieee80211_sta_vht_cap *vht_cap; struct ieee80211_sta_vht_cap *ic_vht_cap; const u8 *bssid = bss_conf->bssid; + bool config_bfee = false; u32 sound_dim; u8 i; @@ -70,7 +71,7 @@ void rtw_bf_assoc(struct rtw_dev *rtwdev, struct ieee80211_vif *vif, bfee->aid = bss_conf->aid; bfinfo->bfer_mu_cnt++; - rtw_chip_config_bfee(rtwdev, rtwvif, bfee, true); + config_bfee = true; } else if ((ic_vht_cap->cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE) && (vht_cap->cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE)) { if (bfinfo->bfer_su_cnt >= chip->bfer_su_max_num) { @@ -96,11 +97,14 @@ void rtw_bf_assoc(struct rtw_dev *rtwdev, struct ieee80211_vif *vif, } } - rtw_chip_config_bfee(rtwdev, rtwvif, bfee, true); + config_bfee = true; } out_unlock: rcu_read_unlock(); + + if (config_bfee) + rtw_chip_config_bfee(rtwdev, rtwvif, bfee, true); } void rtw_bf_init_bfer_entry_mu(struct rtw_dev *rtwdev, -- 2.32.0