[LAU] How to find USB sound card IRQ?

[Thomas Skellund]

Hi all

My laptop has 4 usb holes in it, and i have a USB sound card in one of
them. 
Everything works fine, but i have some xruns

I'm tying to prio both jackd and the right IRQ process for my sound
card.

How can i find out which IRQ my USB sound card use?
(its not shown belowe...it's maya44 usb)

$ cat /proc/interrupts
           CPU0       CPU1       
  0:        664         43   IO-APIC-edge      timer
  1:        829        830   IO-APIC-edge      i8042
  8:          3          4   IO-APIC-edge      rtc
  9:      20503      20220   IO-APIC-fasteoi   acpi
 12:       9059       8991   IO-APIC-edge      i8042
 14:      92878      94797   IO-APIC-edge      libata
 15:          0          0   IO-APIC-edge      libata
 17:         25         21   IO-APIC-fasteoi   ehci_hcd:usb1,
uhci_hcd:usb7, sata_sil24
 18:     304856     304697   IO-APIC-fasteoi   uhci_hcd:usb6, ahci,
iwl3945
 19:         12         13   IO-APIC-fasteoi   uhci_hcd:usb2,
i915 at pci:0000:00:02.0
 20:    3849997    3850202   IO-APIC-fasteoi   uhci_hcd:usb3
 21:     199028     199069   IO-APIC-fasteoi   ehci_hcd:usb4,
uhci_hcd:usb5
 22:       3411       3391   IO-APIC-fasteoi   HDA Intel
NMI:          0          0 
LOC:   24165408   23635862 
ERR:          0
MIS:          0