From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751237AbaHaKX4 (ORCPT ); Sun, 31 Aug 2014 06:23:56 -0400 Received: from mail-wg0-f42.google.com ([74.125.82.42]:35127 "EHLO mail-wg0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751018AbaHaKXy convert rfc822-to-8bit (ORCPT ); Sun, 31 Aug 2014 06:23:54 -0400 Date: Sun, 31 Aug 2014 13:23:51 +0300 From: Mihai =?UTF-8?B?RG9uyJt1?= To: linux-kernel@vger.kernel.org Subject: ath9k: dmar: DRHD: handling fault status reg 3 Message-ID: <20140831132351.48c2a412@mdontu-l> Organization: Home MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, I have this device: 03:02.0 Network controller: Qualcomm Atheros AR9227 Wireless Network Adapter (rev 01) Subsystem: Qualcomm Atheros Device 0300 Flags: bus master, 66MHz, medium devsel, latency 168, IRQ 19 Memory at f7c00000 (32-bit, non-prefetchable) [size=64K] Capabilities: [40] #80 [0000] Kernel driver in use: ath9k which works great, except dmesg keeps being spammed with messages like this one: [ 2880.027256] dmar: DRHD: handling fault status reg 3 [ 2880.027260] dmar: DMAR:[DMA Read] Request device [03:00.0] fault addr ffffd000 DMAR:[fault reason 06] PTE Read access is not set Is this a driver issue or a hardware one? Can I somehow silence it without disabling the use of the IOMMU? Thanks, -- Mihai Donțu