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=-5.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 04D7AC04AAF for ; Tue, 21 May 2019 10:31:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C326C217D7 for ; Tue, 21 May 2019 10:31:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558434683; bh=mb4gcRCdlc4t1BxrH1KDO67uUQe97itsvMsgFVRR+oI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=EdiyrArj+6uHn74KHZodCvRAOsi1u6HC+q906Q1GNQZoN/EvhM+NKOESLtoRAqxSf gN7eUu/CwB+PY12OAI6Pcqpfo/7cqaCjC1SoqFHYmHFZBtWWH8s1sGxn1pMMFEFET4 7m6QMhpTBk1XxUMa3GJZ0vcJiBc59A4PXCTXzDc0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727637AbfEUKbW (ORCPT ); Tue, 21 May 2019 06:31:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:47430 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726344AbfEUKbW (ORCPT ); Tue, 21 May 2019 06:31:22 -0400 Received: from localhost (unknown [49.207.56.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C20FE21743; Tue, 21 May 2019 10:31:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558434681; bh=mb4gcRCdlc4t1BxrH1KDO67uUQe97itsvMsgFVRR+oI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=1T3azC+0XgH3xEp8zysLMOSu8S++YutNokP4axowBzBYutjJuCkzQ7/lP7XAaYOlW Snz0V6hyebzOKq70E2UHDr5QECQvx96Tszf1olmuzgFudaQ7kHEldkcMOj8WN96mF8 MlGCXvuGWzq8EJexNscqQiGDglTT3tQZ38Y/WuxQ= Date: Tue, 21 May 2019 16:01:17 +0530 From: Vinod Koul To: Jorge Ramirez-Ortiz Cc: agross@kernel.org, david.brown@linaro.org, gregkh@linuxfoundation.org, sboyd@kernel.org, bjorn.andersson@linaro.org, jslaby@suse.com, keescook@chromium.org, anton@enomsg.org, ccross@android.com, tony.luck@intel.com, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] tty: serial: msm_serial: Fix XON/XOFF Message-ID: <20190521103117.GD15118@vkoul-mobl> References: <20190520183848.27719-1-jorge.ramirez-ortiz@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190520183848.27719-1-jorge.ramirez-ortiz@linaro.org> User-Agent: Mutt/1.11.3 (2019-02-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 20-05-19, 20:38, Jorge Ramirez-Ortiz wrote: > When the tty layer requests the uart to throttle, the current code > executing in msm_serial will trigger "Bad mode in Error Handler" and > generate an invalid stack frame in pstore before rebooting (that is if > pstore is indeed configured: otherwise the user shall just notice a > reboot with no further information dumped to the console). > > This patch replaces the PIO byte accessor with the word accessor > already used in PIO mode. > > Fixes: 68252424a7c7 ("tty: serial: msm: Support big-endian CPUs") > Cc: stable@vger.kernel.org > Signed-off-by: Jorge Ramirez-Ortiz > Reviewed-by: Bjorn Andersson Reviewed-by: Vinod Koul -- ~Vinod