From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alan Cox Subject: Re: [PATCH ht6560b] Force prefetch for some devices Date: Mon, 18 Feb 2008 14:36:36 +0000 Message-ID: <20080218143636.3394eece@core> References: <47B97EFA.2040805@caiway.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:47446 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1750893AbYBROpH (ORCPT ); Mon, 18 Feb 2008 09:45:07 -0500 In-Reply-To: <47B97EFA.2040805@caiway.nl> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Jan Evert van Grootheest Cc: linux-ide@vger.kernel.org, bzolnier@gmail.com On Mon, 18 Feb 2008 13:50:02 +0100 Jan Evert van Grootheest wrote: > Prefetch needs to be set for some ide devices to work when connected to > a ht6560b interface. This was not always done properly, causing a system > with a HD and CD on the primary interface to not work properly. Or, in > effect, hang hard. > > This patch forces prefetch on devices before checking whether it > is necessary to change the settings in the interface Interesting, that is backwards to the docs and not something I've seen. If you are correct then pata_legacy also wants tweaking . Alan