From patchwork Thu Jun 3 11:53:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Russell King (Oracle)" X-Patchwork-Id: 12297063 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=-10.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 9AAFAC47097 for ; Thu, 3 Jun 2021 11:53:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 81218613E6 for ; Thu, 3 Jun 2021 11:53:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229769AbhFCLzK (ORCPT ); Thu, 3 Jun 2021 07:55:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229885AbhFCLzK (ORCPT ); Thu, 3 Jun 2021 07:55:10 -0400 Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [IPv6:2001:4d48:ad52:32c8:5054:ff:fe00:142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 34CE9C06174A; Thu, 3 Jun 2021 04:53:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:Content-Type:MIME-Version: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=Q6A8IcBGr2lD7OlyIiRQL/OR9300InynikBnSaCPKwM=; b=ZuPqOumz+VEGfVm7ZH1zldT/v dz+FbLOiRJPeGa+0DGKLRR0nv1uw+FmsbenRJHj+fUTdkjgsMsluc9qKB+iMFyuzqFMcne2vTqxHI Md+C7I4cKV3q8OqBt2PWdokcJk1SO7NcNuV9Dl0XkOKW6qPEe0E+wedZlEd9vJHsbiUvb86mRXd1L y1GsQ/urqrUK50RsV329mN/HWjaZBlgvmWtByxrC+9pyYsf7KGjn588SPpn2N1q6B4aUjyh0cFQ2a ATITlpIV9elZCuEcw9sso05ajkV5W0IhG9EOMrJAGYArqI9RG8i/tGjU5CS0PTRXNl770oKNzdyaW reIg2P2lg==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:44666) by pandora.armlinux.org.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1loluX-0002d5-SP; Thu, 03 Jun 2021 12:53:17 +0100 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1loluW-00024z-Tv; Thu, 03 Jun 2021 12:53:16 +0100 Date: Thu, 3 Jun 2021 12:53:16 +0100 From: Russell King To: Kalle Valo Cc: "David S. Miller" , Jakub Kicinski , linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH wireless-drivers-next 0/4] TI wlcore firmware log fixes Message-ID: <20210603115316.GR30436@shell.armlinux.org.uk> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Sender: Russell King (Oracle) Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hi, (I'm assuming this is the correct way to submit for wireless-drivers-next.) The following series fixes a number of issues with the firmware logging on TI wireless devices, noticed while looking at AP mode issues on the WL18xx family of devices. Patch 1 tidies up the use of "fw_log.actual_buff_size" removing multiple unnecessary endian conversions by caching the CPU endian value in a local variable "actual_size". Patch 2 makes the buffer calculations more obvious and adds comments to describe what is going on. In particular, the addition of "addr_ptr" eliminates several "addr + internal_fw_addrbase" calculations in the code. Patch 3 fixes an error in the calculation of "clean_addr" when it hits the end of the buffer, which was causing the kernel console to spew "errors" when firmware tracing is in effect. Patch 4 removes the error message fixed in patch 3, which can still occur when we race with the firmware reading the log structure. The write pointer is where the firmware is writing its next message to, whereas "clean_ptr" is the point that we've read the firmware log to. It is fine that these may not match. As this is a debug facility, I don't see any urgent need to push these patches into -rc nor stable kernels. drivers/net/wireless/ti/wlcore/event.c | 67 +++++++++++++++++++--------------- 1 file changed, 38 insertions(+), 29 deletions(-)