Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763108AbZLQA4h (ORCPT ); Wed, 16 Dec 2009 19:56:37 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756014AbZLQAyp (ORCPT ); Wed, 16 Dec 2009 19:54:45 -0500 Received: from kroah.org ([198.145.64.141]:44525 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760034AbZLQAym (ORCPT ); Wed, 16 Dec 2009 19:54:42 -0500 X-Mailbox-Line: From gregkh@mini.kroah.org Wed Dec 16 16:47:08 2009 Message-Id: <20091217004708.677324097@mini.kroah.org> User-Agent: quilt/0.48-1 Date: Wed, 16 Dec 2009 16:46:03 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Tejun Heo , FUJITA Tomonori , Matteo Frigo , Ingo Molnar Subject: [12/18] x86: Fix iommu=nodac parameter handling In-Reply-To: <20091217005306.GA6230@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1186 Lines: 38 2.6.27-stable review patch. If anyone has any objections, please let us know. ------------------ From: Tejun Heo commit 2ae8bb75db1f3de422eb5898f2a063c46c36dba8 upstream. iommu=nodac should forbid dac instead of enabling it. Fix it. Signed-off-by: Tejun Heo Acked-by: FUJITA Tomonori Cc: Matteo Frigo LKML-Reference: <4AE5B52A.4050408@kernel.org> Signed-off-by: Ingo Molnar Signed-off-by: Greg Kroah-Hartman --- arch/x86/kernel/pci-dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -175,7 +175,7 @@ static __init int iommu_setup(char *p) if (!strncmp(p, "allowdac", 8)) forbid_dac = 0; if (!strncmp(p, "nodac", 5)) - forbid_dac = -1; + forbid_dac = 1; if (!strncmp(p, "usedac", 6)) { forbid_dac = -1; return 1; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/