From patchwork Mon Jun 17 20:01:40 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Erik Stromdahl X-Patchwork-Id: 11000363 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E4F8D14B6 for ; Mon, 17 Jun 2019 20:02:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D958728861 for ; Mon, 17 Jun 2019 20:02:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CD6D52886F; Mon, 17 Jun 2019 20:02:30 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7F8ED28862 for ; Mon, 17 Jun 2019 20:02:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728933AbfFQUC0 (ORCPT ); Mon, 17 Jun 2019 16:02:26 -0400 Received: from mail-lj1-f195.google.com ([209.85.208.195]:34038 "EHLO mail-lj1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726568AbfFQUCZ (ORCPT ); Mon, 17 Jun 2019 16:02:25 -0400 Received: by mail-lj1-f195.google.com with SMTP id p17so10611061ljg.1; Mon, 17 Jun 2019 13:02:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=el/lmx3URjPIgcoee+SzjF2RP1q5hM7+uu7Bj9EF3vk=; b=tZ5OnQajpIZ9SBlSH6SWDGOMWySXm6XR9I7pogLt4tUnlyVOoBR1TPYGl6VdN9GsnH +yhxHl1pAjCN3NO1qyVh9p65Q9oyiWJzkiQDlUJ8bHkYT2dE5rGB6/Po4IK9zp+Gdm4w gHoahmZFLuAndWzPYtY6ovrhldh7xTwjMmtmLkjzJq1N0vAG8Q7/XIsJUuO/QwDDybFC LCS5dhLZJ1KgbN5a29e/6JJyk65JfzbskDJc23CsxVVyo6c5/qRwsff4acnhMBXzZ/t7 CpoklaFA3H4577VW265ZeIdm0DTxR8i2FhnbCyPOeK3IFNz1+jYrJhvET6pUUk6l5IQK qiXg== 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=el/lmx3URjPIgcoee+SzjF2RP1q5hM7+uu7Bj9EF3vk=; b=PHI30DWZhRc8Ac/rdHstDITBuTEHAmBbNNOJjxovIPGm/fBT/WhSmZwlcBNH4xEWTR 68lSGTHwCEHFcvJzf49TpwXO4RITe5eIBbhc2fBTV0acHHt6wRvngbsyLBuNxqIDxi+U iOey3Mqvr0y9DJuMZv8vUdJR3JwbHNkTzUH8EMzCDU1dwOEBTqBLab9Al53VZwc1aT9W btIOQtA5SjR2zPLduITFkb9Zlu5Ojjy2+SwXGLqc77yEl+xuUFaeMUMCng+/NhkUautE XiLDsk7AfCFgaUHOoFzzvfORPAZTS7sVtpGJqk3h9ncRcYK4z8ZRDweJLTu9tYB39zOy qskA== X-Gm-Message-State: APjAAAXclNp9hEgP3eqZ+wOiKc8MLw/Lur2avFo1itYCTuEK+dUAW4tw Miq61OC1g1TFtSD77Ml6epg= X-Google-Smtp-Source: APXvYqytxTqltTU/5ZwjjxHJxPCf68q2+FZPL9kg5tufSXQY1XiNTsj5qLJJNsms3tadjNQ6qNKUfQ== X-Received: by 2002:a2e:6313:: with SMTP id x19mr52311170ljb.25.1560801743538; Mon, 17 Jun 2019 13:02:23 -0700 (PDT) Received: from localhost.localdomain (81-233-89-221-no75.tbcn.telia.com. [81.233.89.221]) by smtp.gmail.com with ESMTPSA id j90sm2245780ljb.29.2019.06.17.13.02.22 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 17 Jun 2019 13:02:23 -0700 (PDT) From: Erik Stromdahl To: johannes@sipsolutions.net, kvalo@codeaurora.org, davem@davemloft.net, linux-wireless@vger.kernel.org, ath10k@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Erik Stromdahl Subject: [PATCH 2/2] ath10k: switch to ieee80211_tx_dequeue_ni Date: Mon, 17 Jun 2019 22:01:40 +0200 Message-Id: <20190617200140.6189-2-erik.stromdahl@gmail.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190617200140.6189-1-erik.stromdahl@gmail.com> References: <20190617200140.6189-1-erik.stromdahl@gmail.com> MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Since ath10k_mac_tx_push_txq() can be called from process context, we must explicitly disable softirqs before the call into mac80211. By calling ieee80211_tx_dequeue_ni() instead of ieee80211_tx_dequeue() we make sure softirqs are always disabled even in the case when ath10k_mac_tx_push_txq() is called from process context. Calling ieee80211_tx_dequeue_ni() with softirq's already disabled (e.g., from softirq context) should be safe as the local_bh_disable() and local_bh_enable() functions (called from ieee80211_tx_dequeue_ni) are fully reentrant. Signed-off-by: Erik Stromdahl --- drivers/net/wireless/ath/ath10k/mac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 2d503d6cdcd2..bbed9f1b1778 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -4033,7 +4033,7 @@ int ath10k_mac_tx_push_txq(struct ieee80211_hw *hw, if (ret) return ret; - skb = ieee80211_tx_dequeue(hw, txq); + skb = ieee80211_tx_dequeue_ni(hw, txq); if (!skb) { spin_lock_bh(&ar->htt.tx_lock); ath10k_htt_tx_dec_pending(htt);