kern/41285: ohci suspend/resume floods dmesg with 'scheduling overruns'

[Christoph_Egger%gmx.de@localhost]

>Number:         41285
>Category:       kern
>Synopsis:       ohci suspend/resume floods dmesg with 'scheduling overruns'
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Apr 26 12:05:00 +0000 2009
>Originator:     Christoph Egger
>Release:        5.99.11 -current
>Organization:
>Environment:
NetBSD/amd64 GENERIC 5.99.11
>Description:

suspend/resume of ohci0 floods dmesg
with '250 scheduling overruns' messages.
I have to get reboot the machine to get rid
of them.

dmesg snippet for ohci0:


ohci0 at pci0 dev 2 function 0: NVIDIA nForce MCP65 USB Controller (rev. 0xa3)
LUS0: Picked IRQ 18 with weight 0
ohci0: interrupting at ioapic0 pin 18
ohci0: OHCI version 1.0, legacy support
usb0 at ohci0: USB revision 1.0
usb0: WARNING: power management not supported
ehci0 at pci0 dev 2 function 1: NVIDIA nForce MCP65 USB Controller (rev. 0xa3)
LUS2: Picked IRQ 17 with weight 0
ehci0: interrupting at ioapic0 pin 17
ehci0: EHCI version 1.0
ehci0: companion controller, 10 ports each: ohci0
usb1 at ehci0: USB revision 2.0
usb1: WARNING: power management not supported

>How-To-Repeat:

#drvctl -S ohci0
#drvctl -Q ohci0
ohci0: 249 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 251 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 251 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 251 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 250 scheduling overruns
ohci0: 251 scheduling overruns

>Fix: