From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755361Ab0EQRHM (ORCPT ); Mon, 17 May 2010 13:07:12 -0400 Received: from hera.kernel.org ([140.211.167.34]:49194 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754645Ab0EQRHK (ORCPT ); Mon, 17 May 2010 13:07:10 -0400 Date: Mon, 17 May 2010 17:06:52 GMT From: tip-bot for Andreas Herrmann Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com, andreas.herrmann3@amd.com, tglx@linutronix.de Reply-To: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org, andreas.herrmann3@amd.com, tglx@linutronix.de In-Reply-To: <20100517164324.GB10254@alberich.amd.com> References: <20100517164324.GB10254@alberich.amd.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/timers] x86, hpet: Add reference to chipset erratum documentation for disable-hpet-msi-quirk Message-ID: Git-Commit-ID: fec84e330719c20d2146c8dbdc9ff50b3a1d7039 X-Mailer: tip-git-log-daemon MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Mon, 17 May 2010 17:06:52 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: fec84e330719c20d2146c8dbdc9ff50b3a1d7039 Gitweb: http://git.kernel.org/tip/fec84e330719c20d2146c8dbdc9ff50b3a1d7039 Author: Andreas Herrmann AuthorDate: Mon, 17 May 2010 18:43:24 +0200 Committer: H. Peter Anvin CommitDate: Mon, 17 May 2010 10:04:43 -0700 x86, hpet: Add reference to chipset erratum documentation for disable-hpet-msi-quirk (At the moment the "SB700 Family Product Errata" document is available at http://support.amd.com/us/Embedded_TechDocs/46837.pdf) Signed-off-by: Andreas Herrmann LKML-Reference: <20100517164324.GB10254@alberich.amd.com> Signed-off-by: H. Peter Anvin --- arch/x86/kernel/quirks.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c index cd2c336..e72d3fc 100644 --- a/arch/x86/kernel/quirks.c +++ b/arch/x86/kernel/quirks.c @@ -495,6 +495,9 @@ void force_hpet_resume(void) /* * HPET MSI on some boards (ATI SB700/SB800) has side effect on * floppy DMA. Disable HPET MSI on such platforms. + * See erratum #27 (Misinterpreted MSI Requests May Result in + * Corrupted LPC DMA Data) in AMD Publication #46837, + * "SB700 Family Product Errata", Rev. 1.0, March 2010. * * Also force the read back of the CMP register in hpet_next_event() * to work around the problem that the CMP register write seems to be