From patchwork Tue Dec 31 09:28:05 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Gong X-Patchwork-Id: 11313861 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 45F5F109A for ; Tue, 31 Dec 2019 09:28:25 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 23E37206D9 for ; Tue, 31 Dec 2019 09:28:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="RkjZlKZA"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="IlKR6tG9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 23E37206D9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=ath10k-bounces+patchwork-ath10k=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=vsBa6qeO7VHdspEWE/1y1QtafP7yHvluamSLSgzxOsY=; b=RkjZlKZAv+5qeo bA7MBSDK1u8RGTlKEDxc1JHFlG5zYPRLKlIqS9nbUt8o8C1EjXdx8g/sxRHEr/L4EZxv/CPcNfISo XKPe7DfyO/F4/X81TXMAjMlUdNbxfM8Trv/uDH+UAEkVU0T8e0K3ujiodu82JgHCkkxlV8sjJ9bhl juTj+eiG8jRwy9dZvTwHzb4DUP/Cnj2syPwiBoysS0QGWQ46KD5RjIVoOx00fdmXrx475k3qsn58g 0mWfriosCP8g7AXZJcgvR/qhZKjzV560OIlOcXwKVZi6jcO+6ZFxQs28fawxe0IgKTCAosbMLJ9Gd UUpTiUUFZnUiXH4iqyZw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1imDpA-0006ip-4f; Tue, 31 Dec 2019 09:28:24 +0000 Received: from mail26.static.mailgun.info ([104.130.122.26]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1imDp5-0006bN-VB for ath10k@lists.infradead.org; Tue, 31 Dec 2019 09:28:22 +0000 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1577784500; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=6OnxIaY/89F6bOipfAHJuWOXROI71sCyvwXMZk88A9M=; b=IlKR6tG9OCjwk338jeKAaqVOlElqYCeAzrdneLF0HoKYiIZY4iwdMoipkJevtb1c6+qTDTZ1 rFBKy3iLR/Hl5eAPwNIUcKjs57JNVtBgcCqQLU1lYKEtCpC5knjXrXLudYtA0KUGSf7UZjmt nsekwy7aWGGdkb3Q4S4QzxrVdic= X-Mailgun-Sending-Ip: 104.130.122.26 X-Mailgun-Sid: WyJiZDQ3OSIsICJhdGgxMGtAbGlzdHMuaW5mcmFkZWFkLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e0b14b0.7fca147f9ca8-smtp-out-n02; Tue, 31 Dec 2019 09:28:16 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 712FDC433A2; Tue, 31 Dec 2019 09:28:15 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=ham autolearn_force=no version=3.4.0 Received: from wgong-HP-Z240-SFF-Workstation.qca.qualcomm.com (unknown [180.166.53.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: wgong) by smtp.codeaurora.org (Postfix) with ESMTPSA id 68BCBC43383; Tue, 31 Dec 2019 09:28:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 68BCBC43383 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=wgong@codeaurora.org From: Wen Gong To: ath10k@lists.infradead.org Subject: [PATCH v3 1/2] ath10k: add refcount for ath10k_core_restart Date: Tue, 31 Dec 2019 17:28:05 +0800 Message-Id: <20191231092806.6247-2-wgong@codeaurora.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191231092806.6247-1-wgong@codeaurora.org> References: <20191231092806.6247-1-wgong@codeaurora.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191231_012820_603256_3CF213BE X-CRM114-Status: GOOD ( 12.13 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [104.130.122.26 listed in wl.mailspike.net] -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [104.130.122.26 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: ath10k@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-wireless@vger.kernel.org Sender: "ath10k" Errors-To: ath10k-bounces+patchwork-ath10k=patchwork.kernel.org@lists.infradead.org When it has more than one restart_work queued meanwhile, the 2nd restart_work is very esay to break the 1st restart work and lead recovery fail. Add a ref count to allow only one restart work running untill device successfully recovered. Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00029. Signed-off-by: Wen Gong --- drivers/net/wireless/ath/ath10k/core.c | 8 ++++++++ drivers/net/wireless/ath/ath10k/core.h | 2 ++ drivers/net/wireless/ath/ath10k/mac.c | 1 + 3 files changed, 11 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c index 91f131b87efc..9439e575ec63 100644 --- a/drivers/net/wireless/ath/ath10k/core.c +++ b/drivers/net/wireless/ath/ath10k/core.c @@ -2199,6 +2199,14 @@ static void ath10k_core_restart(struct work_struct *work) { struct ath10k *ar = container_of(work, struct ath10k, restart_work); int ret; + int restart_count; + + restart_count = atomic_add_return(1, &ar->restart_count); + if (restart_count > 1) { + ath10k_warn(ar, "can not restart, count: %d\n", restart_count); + atomic_dec(&ar->restart_count); + return; + } set_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags); diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index e57b2e7235e3..810c99f2dc0e 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -982,6 +982,8 @@ struct ath10k { /* protected by conf_mutex */ u8 ps_state_enable; + atomic_t restart_count; + bool nlo_enabled; bool p2p; diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 3856edba7915..bc1574145e66 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -7208,6 +7208,7 @@ static void ath10k_reconfig_complete(struct ieee80211_hw *hw, ath10k_info(ar, "device successfully recovered\n"); ar->state = ATH10K_STATE_ON; ieee80211_wake_queues(ar->hw); + atomic_dec(&ar->restart_count); } mutex_unlock(&ar->conf_mutex);