Re: [linux-usb-devel] Re: 2.6.15-mm3 [USB lost interrupt bug]

Reuben Farrelly
2006-01-15T22:50:35Z

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.
>
>> It's a new regression to -mm3.
>
> Did the same IRQ get assigned to that controller in earlier kernel
> versions?
>
> Alan Stern

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
NMI: 0 0
LOC: 21638418 21638338
ERR: 0
MIS: 0
[root@tornado ~]#
[root@tornado ~]# lspci
00:00.0 Host bridge: Intel Corporation 925X/XE Memory Controller Hub (rev 04)
00:01.0 PCI bridge: Intel Corporation 925X/XE PCI Express Root Port (rev 04)
00:1c.0 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI
Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI
Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI
Express Port 3 (rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI
Express Port 4 (rev 03)
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)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d3)
00:1f.0 ISA bridge: Intel Corporation 82801FB/FR (ICH6/ICH6R) LPC Interface
Bridge (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE
Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation 82801FR/FRW (ICH6R/ICH6RW) SATA
Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus
Controller (rev 03)
04:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8050 PCI-E ASF
Gigabit Ethernet Controller (rev 17)
06:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA 2064W [Millennium]
(rev 01)
06:02.0 Serial controller: Timedia Technology Co Ltd PCI2S550 (Dual 16550 UART)
(rev 01)
[root@tornado ~]#

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

Currently booted into -mm1 which is OK and hasn't shown any nasty symptoms yet.

Reuben