From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261246AbVGYW3p (ORCPT ); Mon, 25 Jul 2005 18:29:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261249AbVGYW3p (ORCPT ); Mon, 25 Jul 2005 18:29:45 -0400 Received: from totor.bouissou.net ([82.67.27.165]:28121 "EHLO totor.bouissou.net") by vger.kernel.org with ESMTP id S261246AbVGYW3o (ORCPT ); Mon, 25 Jul 2005 18:29:44 -0400 From: Michel Bouissou Organization: Me, Myself and I To: Alan Stern Subject: Re: VIA KT400 + Kernel 2.6.12 + IO-APIC + uhci_hcd = IRQ trouble Date: Tue, 26 Jul 2005 00:29:41 +0200 User-Agent: KMail/1.7.2 Cc: "Protasevich, Natalie" , linux-kernel@vger.kernel.org References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit Content-Disposition: inline Message-Id: <200507260029.41709@totor.bouissou.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Le Lundi 25 Juillet 2005 22:44, Alan Stern a écrit : > > Now that's strange.  When you plug the high-speed device into the > integrated ports, which IRQ counter changes?  Since nothing is using IRQ > 21, it should be disabled and its counter should remain constant.  Does > this mean the interrupts show up on IRQ 19 (used by ehci-hcd), or do they > not show up at all (i.e., is the USB connection just being polled)? I assume it's IRQ 19. cat /proc/interrupts doesn't show IRQ21 at all when uhci isn't loaded. IRQ 19 being shared with 4 IDE controllers that controls my hard drives, that's hard to isolate interrupts counts due to USB activity from interrupts counts due to disks activity... -- Michel Bouissou OpenPGP ID 0xDDE8AC6E