From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heikki Krogerus Subject: Re: [PATCH 0/2] ACPI: return error in acpi_pci_irq_enable when there is no irq Date: Mon, 16 Sep 2013 10:40:00 +0300 Message-ID: <20130916074000.GA24222@xps8300> References: <1375965314-24232-1-git-send-email-heikki.krogerus@linux.intel.com> <52330A82.7050607@redhat.com> <2086253.mJBe8Nv4qL@vostro.rjw.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mga11.intel.com ([192.55.52.93]:38294 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751062Ab3IPHkE (ORCPT ); Mon, 16 Sep 2013 03:40:04 -0400 Content-Disposition: inline In-Reply-To: Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Bjorn Helgaas Cc: "Rafael J. Wysocki" , Prarit Bhargava , "linux-acpi@vger.kernel.org" , Linux PCI , Yinghai Lu On Fri, Sep 13, 2013 at 05:55:40PM -0600, Bjorn Helgaas wrote: > On Fri, Sep 13, 2013 at 5:43 PM, Rafael J. Wysocki wrote: > > On Friday, September 13, 2013 08:52:18 AM Prarit Bhargava wrote: > >> > >> Rafael, is this in your queue? > > > > No, it is not, because Bjorn wanted to debug this issue deeper as far as I > > could understand. > > > > Bjorn? > > Yes. Yinghai pointed out a possible issue ("some USB3 host controller > does not have intx configured, but still work with MSI?"). I can't > explain to you right now what that means, but I did look at it enough > to think that there indeed might be a problem there. > > So I asked [1] for a bugzilla with more info (dmesg, acpidump) so > somebody could look at it. Actually, I was hoping Heikki or Prarit > would look into it and address Yinghai's concern. Maybe there's no > problem there, but we should at least look and explain *why* it's not > a problem. And I would really like a kernel.org bugzilla with the > info, in case this change turns out to have unintended consequences > and we have to debug it again later. I'll ask Sarah (xHCI maintaner) for help in case she knows something and create a bug for this if needed. I don't understand much about PCI, I need to study it a bit. Why would it be a problem to get the xHCI working with only MSI? Thanks, -- heikki