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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 72D94C54E4A for ; Fri, 8 May 2020 19:20:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 546D920CC7 for ; Fri, 8 May 2020 19:20:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727825AbgEHTU2 (ORCPT ); Fri, 8 May 2020 15:20:28 -0400 Received: from mga11.intel.com ([192.55.52.93]:10492 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727771AbgEHTU0 (ORCPT ); Fri, 8 May 2020 15:20:26 -0400 IronPort-SDR: fkgp6qjEB9YPKbU7OzUEYdY60DIpVkJsTBwBjSe3+VVPJ42JuVqq8ttIs+zyem0M3gA+6w4Q6I xcb2kImhCYFA== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 May 2020 12:20:25 -0700 IronPort-SDR: zkk7rjcjQuW48J/dR6E03muJ4tzbRGiVW4TWBIhjjtsDGvHWgQupWqRCVojnPENmCyBhxKgviK pDMdY11hjGrA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,368,1583222400"; d="scan'208";a="249840190" Received: from smile.fi.intel.com (HELO smile) ([10.237.68.40]) by orsmga007.jf.intel.com with ESMTP; 08 May 2020 12:20:20 -0700 Received: from andy by smile with local (Exim 4.93) (envelope-from ) id 1jX8Xn-005T4h-80; Fri, 08 May 2020 22:20:23 +0300 Date: Fri, 8 May 2020 22:20:23 +0300 From: Andy Shevchenko To: Serge Semin Cc: Mark Brown , Serge Semin , Georgy Vlasov , Ramil Zaripov , Alexey Malahov , Thomas Bogendoerfer , Paul Burton , Ralf Baechle , Arnd Bergmann , Allison Randal , Gareth Williams , Rob Herring , linux-mips@vger.kernel.org, devicetree@vger.kernel.org, Thomas Gleixner , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 12/17] spi: dw: Fix dma_slave_config used partly uninitialized Message-ID: <20200508192023.GS185537@smile.fi.intel.com> References: <20200508132943.9826-1-Sergey.Semin@baikalelectronics.ru> <20200508132943.9826-13-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200508132943.9826-13-Sergey.Semin@baikalelectronics.ru> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 08, 2020 at 04:29:37PM +0300, Serge Semin wrote: > Since the TX and RX DMA-slave config structures are declared on the > stack and only a part of their fields is initialized further in the > prepare Tx/Rx methods, the next dmaengine_slave_config() calls may > randomly perform an incorrect DMA channels setup depending on the > stack initial values. Lets fix this by zeroing the config-structures > before using them. Already in spi/for-next. -- With Best Regards, Andy Shevchenko