linux-kernel - Re: 3.4.4: disabling irq

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Date:	Mon, 19 Nov 2012 17:47:06 +0100
From:	Udo van den Heuvel <udovdh@...all.nl>
To:	linux-usb@...r.kernel.org
CC:	Alan Stern <stern@...land.harvard.edu>,
	Jan Ceuleers <jan.ceuleers@...puter.org>,
	Clemens Ladisch <clemens@...isch.de>,
	Simon Jones <sijones2010@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: 3.4.4: disabling irq

On 2012-11-19 17:41, Alan Stern wrote:
>> How to proceed next?
> 
> Firstly, what does /proc/interrupts say?

# cat /proc/interrupts
           CPU0       CPU1       CPU2       CPU3
  0:         39          0          0          0   IO-APIC-edge      timer
  1:        716        721        730        687   IO-APIC-edge      i8042
  4:       1631       1603       1713       1914   IO-APIC-edge      serial
  9:          0          0          0          0   IO-APIC-fasteoi   acpi
 16:        427        437        443        447   IO-APIC-fasteoi
snd_hda_intel
 17:          0          0          3          1   IO-APIC-fasteoi
ehci_hcd:usb4, ehci_hcd:usb5
 18:     100443     100710     103881     116011   IO-APIC-fasteoi
ohci_hcd:usb1, ohci_hcd:usb2, ohci_hcd:usb3
 20:       8049       8235       8456       9657   IO-APIC-fasteoi   serial
 40:          0          0          0          0   PCI-MSI-edge      AMD-Vi
 43:      47534      47847      49501      52187   PCI-MSI-edge      ahci
 44:     118811     119571     123111     134412   PCI-MSI-edge      eth0
 45:          0          0          0          0   PCI-MSI-edge
xhci_hcd
 46:          0          0          0          0   PCI-MSI-edge
xhci_hcd
 47:          0          0          0          0   PCI-MSI-edge
xhci_hcd
 48:          0          0          0          0   PCI-MSI-edge
xhci_hcd
 49:          0          0          0          0   PCI-MSI-edge
xhci_hcd
 50:          0          0          0          0   PCI-MSI-edge
xhci_hcd
 51:          0          0          0          0   PCI-MSI-edge
xhci_hcd
 52:          0          0          0          0   PCI-MSI-edge
xhci_hcd
 53:          0          0          0          0   PCI-MSI-edge
xhci_hcd
 54:          0          0          0          0   PCI-MSI-edge
xhci_hcd
 55:          0          0          0          0   PCI-MSI-edge
xhci_hcd
 56:         33         28         36         28   PCI-MSI-edge
snd_hda_intel
 57:      52846      53825      56666      64450   PCI-MSI-edge      radeon
NMI:          0          0          0          0   Non-maskable interrupts
LOC:     381988     405614     348070     323872   Local timer interrupts
SPU:          0          0          0          0   Spurious interrupts
PMI:          0          0          0          0   Performance
monitoring interrupts
IWI:          0          0          0          0   IRQ work interrupts
RTR:          0          0          0          0   APIC ICR read retries
RES:    1166893    1184781    1089048    1016935   Rescheduling interrupts
CAL:      34472      32009      62610      50241   Function call interrupts
TLB:          0          0          0          0   TLB shootdowns
THR:          0          0          0          0   Threshold APIC interrupts
MCE:          0          0          0          0   Machine check exceptions
MCP:          8          8          8          8   Machine check polls
ERR:          4
MIS:          0

> Secondly, try building a kernel with the patch below and 
> CONFIG_USB_DEBUG enabled.  Let's see what the dmesg log says when the 
> problem occurs.

Will do!

Udo

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