Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750926AbWEPBFx (ORCPT ); Mon, 15 May 2006 21:05:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750927AbWEPBFx (ORCPT ); Mon, 15 May 2006 21:05:53 -0400 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:51869 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S1750924AbWEPBFw (ORCPT ); Mon, 15 May 2006 21:05:52 -0400 Subject: Re: pcmcia oops on 2.6.17-rc[12] From: Alan Cox To: Linus Torvalds Cc: Russell King , Andrew Morton , Andreas Mohr , florin@iucha.net, linux-kernel@vger.kernel.org, linux@dominikbrodowski.net In-Reply-To: References: <20060423192251.GD8896@iucha.net> <20060423150206.546b7483.akpm@osdl.org> <20060508145609.GA3983@rhlx01.fht-esslingen.de> <20060508084301.5025b25d.akpm@osdl.org> <20060508163453.GB19040@flint.arm.linux.org.uk> <1147730828.26686.165.camel@localhost.localdomain> <1147734026.26686.200.camel@localhost.localdomain> <1147738680.26686.231.camel@localhost.localdomain> Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Tue, 16 May 2006 02:18:23 +0100 Message-Id: <1147742303.31247.2.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 (2.2.3-4.fc4) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 918 Lines: 21 On Llu, 2006-05-15 at 17:18 -0700, Linus Torvalds wrote: > The irq auto-detection should work with shared interrupts, but yes, it > won't _detect_ them if they are already in use (but it's ok with them > becoming shared later). > > That said, true ISA cards obviously won't ever have a shared irq, in any > normal circumstances. It really isn't that simple. ISAPnP and later ISA cards often allowed the IRQ to be configured at runtime. Drivers doing this depend upon the request_irq failing to decide which interrupt line to assign. The resource management side of exclusive IRQ allocation is for better or worse deeply embedded in the current interrupt design. Alan - 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/