Return-path: Received: from mail-iw0-f174.google.com ([209.85.214.174]:35060 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751916Ab1CTXmk (ORCPT ); Sun, 20 Mar 2011 19:42:40 -0400 Received: by iwn34 with SMTP id 34so5880689iwn.19 for ; Sun, 20 Mar 2011 16:42:40 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <4D866714.80503@lockie.ca> References: <4D866714.80503@lockie.ca> From: Julian Calaby Date: Mon, 21 Mar 2011 10:42:20 +1100 Message-ID: Subject: Re: why would IRQ change? To: James Cc: linux-wireless Mailing List Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Mon, Mar 21, 2011 at 07:44, James wrote: > Is there a tool to list what devices are assigned what IRQ? > > This from an old kernel: > ieee80211 phy0: Atheros AR5416 MAC/BB Rev:2 AR2133 RF Rev:81 > mem=0xffffc900017a0000, irq=18 > > This is from today: > ath9k 0000:02:09.0: PCI INT A -> Link[LNKB] -> GSI 17 (level, low) -> IRQ 17 > ieee80211 phy0: Atheros AR5416 MAC/BB Rev:2 AR2133 RF Rev:81 > mem=0xffffc90001ba0000, irq=17 AFAIK, PCI interrupts numbers are just sequential numbers assigned by Linux - there is no significance to them, they are just a number for tracking which interrupt is assigned to which device - there is no "IRQ17" or "IRQ18" anywhere in any actual hardware. Thanks, -- Julian Calaby Email: julian.calaby@gmail.com Profile: http://www.google.com/profiles/julian.calaby/ .Plan: http://sites.google.com/site/juliancalaby/