From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [PATCH RFC] ata: Intel IDE-R support Date: Thu, 19 Aug 2010 14:56:27 +0200 Message-ID: <4C6D29FB.3000002@suse.de> References: <20100810155559.7620.79711.stgit@localhost.localdomain> <4C6AB68D.8000102@kernel.org> <20100817174257.3691ed68@lxorguk.ukuu.org.uk> <4C6AB919.7060203@kernel.org> <20100817180158.179e7780@lxorguk.ukuu.org.uk> <4C6ABFFA.2000502@kernel.org> <20100817192353.3529733c@lxorguk.ukuu.org.uk> <4C6B7B72.4090405@kernel.org> <20100818110306.03ce2fbc@lxorguk.ukuu.org.uk> <4C6BE9C8.4030803@kernel.org> <20100818161521.430ba361@lxorguk.ukuu.org.uk> <4C6CFB63.2070001@kernel.org> <20100819110959.40312e58@linux.intel.com> <4C6D13E2.1010703@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from cantor2.suse.de ([195.135.220.15]:59111 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753231Ab0HSNAJ (ORCPT ); Thu, 19 Aug 2010 09:00:09 -0400 In-Reply-To: <4C6D13E2.1010703@kernel.org> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Alan Cox Cc: Alan Cox , linux-ide@vger.kernel.org, jeff@garzik.org, kay.sievers@suse.de Hello, again. On 08/19/2010 01:22 PM, Tejun Heo wrote: > On 08/19/2010 12:09 PM, Alan Cox wrote: >>> what if ata_piix is already compiled in or already loaded but ahci is >>> not for an ich6 controller? We have priorities in the drivers, if the >>> user/admin wants to use the lower priority ones that much, he/she >>> shall. This isn't an issue. There's no way to hotplug intel IDEs >>> anyway. >> >> The PIIX4 in the IBM docking stations is hot plug - and its why I also >> have to check 0x40 and write it if zero. So the case exists. > > I see. Most of the problems are solved by driver priority but yeah > that's an actual corner case. Driver priority doesn't work unless all > the matching drivers are loaded by the time driver matching starts, so > the same problem could happen with pata_acpi depending on probe order > during normal boot, so pata_acpi should be blacklisted by default. It seems priority thing can't handle this at all. So, to the original patch, Acked-by: Tejun Heo Thanks. -- tejun