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From: Alan Stern <stern@rowland.harvard.edu>
To: Reuben Farrelly <reuben-lkml@reub.net>
Cc: Andrew Morton <akpm@osdl.org>, <linux-kernel@vger.kernel.org>,
	<jgarzik@pobox.com>, Greg KH <greg@kroah.com>,
	<linux-usb-devel@lists.sourceforge.net>,
	Neil Brown <neilb@cse.unsw.edu.au>, <linux-acpi@vger.kernel.org>
Subject: Re: [linux-usb-devel] Re: 2.6.15-mm3 [USB lost interrupt bug]
Date: Sun, 15 Jan 2006 22:22:49 -0500 (EST)	[thread overview]
Message-ID: <Pine.LNX.4.44L0.0601152212340.1929-100000@netrider.rowland.org> (raw)
In-Reply-To: <43CAD1BB.60301@reub.net>

On Mon, 16 Jan 2006, Reuben Farrelly wrote:

> On 13/01/2006 4:53 a.m., Alan Stern wrote:
> > On Thu, 12 Jan 2006, Reuben Farrelly wrote:
> > 
> >>>> Initializing USB Mass Storage driver...
> >>>> irq 193: nobody cared (try booting with the "irqpoll" option)
> > 
> >>>> handlers:
> >>>> [<c027017e>] (usb_hcd_irq+0x0/0x56)
> >>>> Disabling IRQ #193
> >>> USB lost its interrupt.  Could be USB, more likely ACPI.
> >> I've seen this one happen nearly every boot since then including bootups that 
> >> are otherwise OK (no oopses), so it's probably worth more looking into rather 
> >> than being written off as a 'once off':
> >>
> >> uhci_hcd 0000:00:1d.3: Unlink after no-IRQ?  Controller is probably using the 
> >> wrong IRQ.

Note the PCI ID is 1d.3 and the IRQ is 193.

> Hi Alan,
> 
> If it's any use, here's some simply and easy-to-get information which may even 
> be what you are looking for:
> 
> [root@tornado dovecot]# uname -a
> Linux tornado.reub.net 2.6.15-mm1 #1 SMP Sun Jan 8 03:42:25 NZDT 2006 i686 i686 
> i386 GNU/Linux
> [root@tornado ~]# cat /proc/interrupts
>             CPU0       CPU1
>    0:   21638510          0    IO-APIC-edge  timer
>    4:        356          0    IO-APIC-edge  serial
>    8:          1          0    IO-APIC-edge  rtc
>    9:          0          0   IO-APIC-level  acpi
>   14:          1          0    IO-APIC-edge  ide0
>   50:          3          0   IO-APIC-level  ehci_hcd:usb1, uhci_hcd:usb2
> 169:        120          0   IO-APIC-level  uhci_hcd:usb5
> 177:    2837992          0   IO-APIC-level  sky2
> 185:      61450          0   IO-APIC-level  uhci_hcd:usb4, serial
> 193:    4722447          0   IO-APIC-level  libata, uhci_hcd:usb3

Note that in the earlier kernel, IRQ 193 is assigned to usb3.  That's the 
second UHCI controller, since usb1 is EHCI.

> [root@tornado ~]# lspci

> 00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) 
> USB UHCI #1 (rev 03)
> 00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) 
> USB UHCI #2 (rev 03)
> 00:1d.2 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) 
> USB UHCI #3 (rev 03)
> 00:1d.3 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) 
> USB UHCI #4 (rev 03)
> 00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) 
> USB2 EHCI Controller (rev 03)

Note that 1d.3 is the fourth UHCI controller; the second is 1d.1.

> I guess this looks like it was assigned the same IRQ ?

I don't think so.  To be certain you'd have to check the boot-up log and
verify that 1d.1 is usb3 and 1d.3 is usb5.

>From the information presented here, it looks like -mm1 correctly routes
the 1d.1 controller to IRQ 193 and the 1d.3 controller to IRQ 169, whereas
-mm3 incorrectly routes the 1d.3 controller to IRQ 193.  That would make 
it an ACPI problem.

Alan Stern


  reply	other threads:[~2006-01-16  3:22 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-01-11 12:21 2.6.15-mm3 Andrew Morton
2006-01-11 13:43 ` 2.6.15-mm3 Pekka Enberg
2006-01-11 14:27 ` 2.6.15-mm3 Ashutosh Naik
2006-01-11 16:21 ` 2.6.15-mm3 Dominik Karall
2006-01-11 22:22   ` 2.6.15-mm3, current -git: drivers/media/video/ compile errors Adrian Bunk
2006-01-11 22:48     ` Mauro Carvalho Chehab
2006-01-11 16:57 ` [PATCH -mm] mm/rmap.c: don't forget to include module.h Alexey Dobriyan
2006-01-11 21:42   ` Adrian Bunk
2006-01-11 21:50     ` Christoph Lameter
2006-01-11 18:25 ` 2.6.15-mm3 Roman Zippel
2006-01-11 18:45   ` 2.6.15-mm3 Andrew Morton
2006-01-11 22:26     ` 2.6.15-mm3 Roman Zippel
2006-01-11 18:34 ` 2.6.15-mm3 Brice Goglin
2006-01-11 18:40   ` 2.6.15-mm3 Dominik Brodowski
2006-01-11 19:07     ` 2.6.15-mm3 Brice Goglin
2006-01-11 19:55       ` 2.6.15-mm3 Dominik Brodowski
2006-01-11 20:28         ` 2.6.15-mm3 Brice Goglin
2006-01-11 21:21           ` 2.6.15-mm3 Dominik Brodowski
2006-01-11 22:47             ` 2.6.15-mm3 Brice Goglin
2006-01-11 23:00               ` 2.6.15-mm3 Dominik Brodowski
2006-01-11 23:23                 ` 2.6.15-mm3 Brice Goglin
2006-01-11 18:49   ` 2.6.15-mm3 Andrew Morton
2006-01-11 21:39 ` 2.6.15-mm3 Grant Coady
2006-01-11 23:41 ` 2.6.15-mm3: arch/ia64/sn/kernel/sn2/sn_proc_fs.c compile error Adrian Bunk
2006-01-12  0:01   ` Andrew Morton
2006-01-12  0:17     ` Adrian Bunk
2006-01-12  0:23       ` Andrew Morton
2006-01-12  0:54         ` Adrian Bunk
2006-01-12  1:02 ` [-mm patch] fix arch/ia64/sn/kernel/tiocx.c compilation Adrian Bunk
2006-01-12 16:43   ` Greg KH
2006-01-12  4:04 ` 2.6.15-mm3 Reuben Farrelly
2006-01-12  4:33   ` 2.6.15-mm3 Andrew Morton
2006-01-12  4:38     ` 2.6.15-mm3 Reuben Farrelly
2006-01-12  8:54     ` 2.6.15-mm3 [USB lost interrupt bug] Reuben Farrelly
2006-01-12 15:53       ` [linux-usb-devel] " Alan Stern
2006-01-15 22:50         ` Reuben Farrelly
2006-01-16  3:22           ` Alan Stern [this message]
2006-01-16  3:28             ` Reuben Farrelly
2006-01-16  3:46               ` Alan Stern
2006-01-21  5:21                 ` Reuben Farrelly
2006-01-21  5:47                   ` Andrew Morton
2006-01-21  7:58                     ` Reuben Farrelly
2006-01-21  8:32                       ` [PATCH] " Jeff Garzik
2006-01-21 10:41                         ` Reuben Farrelly
2006-01-12 10:48 ` [RFC: -mm patch] swsusp: make some code static Adrian Bunk
2006-01-12 15:29   ` Pavel Machek
2006-01-12 16:18     ` Rafael J. Wysocki
2006-01-12 10:48 ` [-mm patch] drivers/block/aoe/aoecmd.c: make aoecmd_cfg_pkts() static Adrian Bunk
2006-01-12 23:55   ` Ed L. Cashin
2006-01-12 21:05 ` 2.6.15-mm3 Rafael J. Wysocki
2006-01-12 21:58   ` 2.6.15-mm3 Andrew Morton
2006-01-12 22:01     ` 2.6.15-mm3 Patrick McHardy
2006-01-13  8:34 ` 2.6.15-mm3 Sachin Sant
2006-01-13 11:52   ` 2.6.15-mm3 Andrew Morton
2006-01-13 21:59     ` 2.6.15-mm3 Benjamin Herrenschmidt

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