USB Serial device disconnect causes IRQ disable

[amruth]

Hi
I again encountered the same issue IRQ23 disabled.
Here is my /proc/interrupts
           CPU0       CPU1       
  0:        381          0   IO-APIC-edge      timer
  1:         47       6499   IO-APIC-edge      i8042
  3:          2          0   IO-APIC-edge    
  4:          4          0   IO-APIC-edge    
  6:          7          0   IO-APIC-edge      floppy
  9:          0          0   IO-APIC-fasteoi   acpi
 12:          4          0   IO-APIC-edge      i8042
 14:      27742          0   IO-APIC-edge      ide0
 15:       3152     809663   IO-APIC-edge      ide1
 16:        383          0   IO-APIC-fasteoi   uhci_hcd:usb2, uhci_hcd:usb5
 18:     888468          0   IO-APIC-fasteoi   ata_piix, uhci_hcd:usb4, eth0
 19:        268          0   IO-APIC-fasteoi   uhci_hcd:usb3
 23:     300001          0   IO-APIC-fasteoi   ehci_hcd:usb1
NMI:        436        172   Non-maskable interrupts
LOC:    1810724    1760209   Local timer interrupts
RES:     171199     167417   Rescheduling interrupts
CAL:        140       6288   function call interrupts
TLB:       4071       1963   TLB shootdowns
TRM:          0          0   Thermal event interrupts
SPU:          0          0   Spurious interrupts
ERR:          0
MIS:          0

Thanks
Amruth p.v


--- On Thu, 8/7/08, Oliver Neukum <oliver@xxxxxxxxxx> wrote:

> From: Oliver Neukum <oliver@xxxxxxxxxx>
> Subject: Re: USB Serial device disconnect causes IRQ disable
> To: "amruth" <amruth_pv@xxxxxxxxx>
> Cc: linux-usb@xxxxxxxxxxxxxxx
> Date: Thursday, August 7, 2008, 3:10 AM
> Am Mittwoch 06 August 2008 22:58:08 schrieb amruth:
> > Hi
> > All
> > After disconnecting the usb serial device randomly. I
> am getting the following error.
> > 
> > usr/src/linux-2.6.26/drivers/usb/serial/usb-serial.c:
> serial is OK
> > /usr/src/linux-2.6.26/drivers/usb/serial/usb-serial.c:
> after rteturn serial
> > /usr/src/linux-2.6.26/drivers/usb/serial/usb-serial.c:
> before unregister serial
> > magtek ttyUSB0: Magtek 75/Excella USB card reader
> converter now disconnected from ttyUSB0
> > /usr/src/linux-2.6.26/drivers/usb/serial/usb-serial.c:
> port_release - ttyUSB0
> > /usr/src/linux-2.6.26/drivers/usb/serial/usb-serial.c:
> after unregister serial
> 
> If you have a spurious interrupt sharing a line with a
> legitimate source
> of interrupts, you'll see nothing while the legitimate
> source operates.
> Is there another device sharing irq 23? What does
> /proc/interrupts say?
> 
> 	Regards
> 		Oliver


      

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