From patchwork Thu May 2 09:07:01 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanislaw Gruszka X-Patchwork-Id: 10926409 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 E48F192A for ; Thu, 2 May 2019 09:07:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D629028479 for ; Thu, 2 May 2019 09:07:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CA21728E78; Thu, 2 May 2019 09:07:20 +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=-7.9 required=2.0 tests=BAYES_00,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 E930B28479 for ; Thu, 2 May 2019 09:07:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726528AbfEBJHS (ORCPT ); Thu, 2 May 2019 05:07:18 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55364 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726191AbfEBJHS (ORCPT ); Thu, 2 May 2019 05:07:18 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 85D24307D987; Thu, 2 May 2019 09:07:17 +0000 (UTC) Received: from localhost (ovpn-204-54.brq.redhat.com [10.40.204.54]) by smtp.corp.redhat.com (Postfix) with ESMTP id 13BD98ADA1; Thu, 2 May 2019 09:07:16 +0000 (UTC) From: Stanislaw Gruszka To: linux-wireless@vger.kernel.org Cc: =?utf-8?q?Tomislav_Po=C5=BEega?= , Daniel Golle , Felix Fietkau , Mathias Kresin Subject: [PATCH 7/7] rt2800: do not enable watchdog by default Date: Thu, 2 May 2019 11:07:01 +0200 Message-Id: <1556788021-6531-9-git-send-email-sgruszka@redhat.com> In-Reply-To: <1556788021-6531-1-git-send-email-sgruszka@redhat.com> References: <1556788021-6531-1-git-send-email-sgruszka@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.48]); Thu, 02 May 2019 09:07:17 +0000 (UTC) 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 Make watchdog disabled by default and add module parameter to enable it. User will have to create file in /etc/modprobe.d/ with options rt2800lib watchdog=1 to enable the watchdog or load "rt2800lib watchdog=1" module manually before loading rt2800{soc,pci,usb} module. Signed-off-by: Stanislaw Gruszka --- drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 12 ++++++++++-- drivers/net/wireless/ralink/rt2x00/rt2x00.h | 1 + drivers/net/wireless/ralink/rt2x00/rt2x00link.c | 2 +- 3 files changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c index a509953d7c2e..3c04e8fb65b5 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c @@ -41,6 +41,10 @@ #include "rt2800lib.h" #include "rt2800.h" +static bool modparam_watchdog; +module_param_named(watchdog, modparam_watchdog, bool, S_IRUGO); +MODULE_PARM_DESC(watchdog, "Enable watchdog to detect tx/rx hangs and reset hardware if detected"); + /* * Register access. * All access to the CSR registers will go through the methods @@ -10289,8 +10293,12 @@ int rt2800_probe_hw(struct rt2x00_dev *rt2x00dev) __set_bit(REQUIRE_TASKLET_CONTEXT, &rt2x00dev->cap_flags); } - __set_bit(CAPABILITY_RESTART_HW, &rt2x00dev->cap_flags); - rt2x00dev->link.watchdog_interval = msecs_to_jiffies(100); + if (modparam_watchdog) { + __set_bit(CAPABILITY_RESTART_HW, &rt2x00dev->cap_flags); + rt2x00dev->link.watchdog_interval = msecs_to_jiffies(100); + } else { + rt2x00dev->link.watchdog_disabled = true; + } /* * Set the rssi offset. diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00.h b/drivers/net/wireless/ralink/rt2x00/rt2x00.h index 1d7eaa9ecffb..c76d41272b03 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h @@ -337,6 +337,7 @@ struct link { */ struct delayed_work watchdog_work; unsigned int watchdog_interval; + bool watchdog_disabled; /* * Work structure for scheduling periodic AGC adjustments. diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00link.c b/drivers/net/wireless/ralink/rt2x00/rt2x00link.c index fcc59553918f..db4b164ac848 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00link.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00link.c @@ -395,7 +395,7 @@ void rt2x00link_start_watchdog(struct rt2x00_dev *rt2x00dev) struct link *link = &rt2x00dev->link; if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) && - rt2x00dev->ops->lib->watchdog) + rt2x00dev->ops->lib->watchdog && !link->watchdog_disabled) ieee80211_queue_delayed_work(rt2x00dev->hw, &link->watchdog_work, link->watchdog_interval);