From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755515AbcG0MOU (ORCPT ); Wed, 27 Jul 2016 08:14:20 -0400 Received: from mx2.suse.de ([195.135.220.15]:59828 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753991AbcG0MOS (ORCPT ); Wed, 27 Jul 2016 08:14:18 -0400 Subject: Re: [PATCH] 8250: option 'force_polling' for buggy IRQs To: One Thousand Gnomes References: <1469468175-15704-1-git-send-email-mstaudt@suse.de> <20160725174712.GA5752@kroah.com> <20160726150856.GA15676@kroah.com> <20160727130923.4c20524b@lxorguk.ukuu.org.uk> Cc: Greg KH , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org From: Max Staudt Message-ID: <2b140616-c210-e754-a854-cd6a5675277d@suse.de> Date: Wed, 27 Jul 2016 14:14:24 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2 MIME-Version: 1.0 In-Reply-To: <20160727130923.4c20524b@lxorguk.ukuu.org.uk> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/27/2016 02:09 PM, One Thousand Gnomes wrote: >> I simply thought this patch may be useful for other people as well, that's >> why I sent it upstream. > > If you set the IRQ to 0 it should poll anyway (0 means 'no IRQ') so I > don't think the option is needed. At least it seems sufficient to get me > by when I meet buggy PC BIOSes and the like That's exactly what the patch does - but if there is already a way to set the IRQ to 0, I would of course prefer to use that. It seems I haven't found the trick you're using - could you please tell me how you set the IRQ to 0? I can't change it in the BIOS, so I have to do it at the kernel level at the latest. Thanks Max