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

From: Reuben Farrelly
Date: Sun Jan 15 2006 - 17:49:44 EST

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




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