From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Gortmaker Subject: Re: [PATCH 3/3] 8250: add workaround for MPC8[356]xx UART break IRQ storm Date: Fri, 2 Dec 2011 11:34:28 -0500 Message-ID: <4ED8FE14.7020007@windriver.com> References: <1322783258-20443-1-git-send-email-paul.gortmaker@windriver.com> <1322783258-20443-4-git-send-email-paul.gortmaker@windriver.com> <4ED812E4.60905@freescale.com> <4ED81632.3030809@windriver.com> <176AE2A1-6AA2-4F14-942F-8ED77AB1DBEC@kernel.crashing.org> <20111202113059.15d73840@lxorguk.ukuu.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from mail.windriver.com ([147.11.1.11]:61743 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756990Ab1LBQeu (ORCPT ); Fri, 2 Dec 2011 11:34:50 -0500 In-Reply-To: <20111202113059.15d73840@lxorguk.ukuu.org.uk> Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: Alan Cox Cc: Kumar Gala , Scott Wood , gregkh@suse.de, alan@linux.intel.com, linux-serial@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org On 11-12-02 06:30 AM, Alan Cox wrote: >>> OK, I'll simply change the above to CONFIG_PPC then. >> >> It does, the bug is in the uart IP which I don't think we ever plan on fixing, so 32 or 64-bit parts will have it for ever and ever ;) > > It should be runtime selected, there should be no ifdefs here. The ifdef wasn't strictly required; it just made it so gcc would toss the errata code out of the irq handler for !PPC. Anyway it will be a moot point if I can somehow hide all the mess by snooping serial_inp() traffic and deploying the errata fix from there.... P. >