"Disabling IRQ #16"?

English Hardware
1

Every time I start Linux (OpenSuse 13.1), after some minutes I get this message on all consoles:

kernel: 1111.687622] Disabling IRQ #16

What does it mean?

2

These can help with determining the hardware device associated with a given interrupt

cat /proc/interrupts

/sbin/lspci -v

The kernel can take this kind of action when spurious interrupts are generated. There are a number of underlying causes. It could be the hardware itself or driver-related perhaps.

More info about how this works here:
http://www.tldp.org/LDP/tlk/dd/interrupts.html

3 
16:     300034          0          0          0   IO-APIC-fasteoi   ehci_hcd:usb1, enp4s0

00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) (prog-if 20 [EHCI])
        Subsystem: ASRock Incorporation Device 1c2d
        Flags: bus master, medium devsel, latency 0, IRQ 16
        Memory at fba06000 (32-bit, non-prefetchable) [size=1]
        Capabilities: <access denied>
        Kernel driver in use: ehci-pci

[/size]

4

I’m at the limits of my knowledge with this. There’s nothing unusual with the hardware that I know of. Any spurious interrupts reported by ‘cat /proc/interrupts’? Hard to know whether it’s your ethernet controller (which you didn’t list via the lspci output) or the EHCI controller that’s the underlying cause here. If everything is operating as it’s supposed to, then probably nothing to be concerned about.