Return-path: Received: from dell.nexicom.net ([216.168.96.13]:43382 "EHLO smtp.nexicom.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752424Ab1CUCAg (ORCPT ); Sun, 20 Mar 2011 22:00:36 -0400 Received: from mail.lockie.ca (dyn-dsl-lh-98-124-36-5.nexicom.net [98.124.36.5]) by smtp.nexicom.net (8.13.6/8.13.4) with ESMTP id p2L20WbG027785 for ; Sun, 20 Mar 2011 22:00:32 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) by mail.lockie.ca (Postfix) with ESMTP id 75EE01E0426 for ; Sun, 20 Mar 2011 22:00:31 -0400 (EDT) Message-ID: <4D86B13F.10607@lockie.ca> Date: Sun, 20 Mar 2011 22:00:31 -0400 From: James MIME-Version: 1.0 CC: linux-wireless Mailing List Subject: Re: why would IRQ change? References: <4D866714.80503@lockie.ca> <4D86A311.2070404@lockie.ca> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 To: unlisted-recipients:; (no To-header on input) Sender: linux-wireless-owner@vger.kernel.org List-ID: On 03/20/11 21:14, Julian Calaby wrote: > On Mon, Mar 21, 2011 at 12:00, James wrote: >> On 03/20/11 19:42, Julian Calaby wrote: >>> 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, >>> >> I'm thinking maybe the IRQ sharing doesn't work right with this card. > It's a PCI card. See: http://en.wikipedia.org/wiki/Conventional_PCI#Interrupts > > Thanks, > Interesting, thanks.