Asset ID:	1-72-1337295.1
Update Date:	2011-07-12
Keywords:

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Solution Type  Problem Resolution Sure

Solution  1337295.1 :   SF15K: No SOF interrupts have been received, this USB OHCI hostcontroller is unusable  

In this Document
  Symptoms
  Cause
  Solution

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Created from <SR 3-4018881293>

Applies to:

Sun Fire E20K Server - Version: Not Applicable to Not Applicable - Release: N/A to N/A
Sun Fire 12K Server - Version: Not Applicable to Not Applicable   [Release: N/A to N/A]
Sun Fire 15K Server - Version: Not Applicable to Not Applicable   [Release: N/A to N/A]
Sun Fire E25K Server - Version: Not Applicable to Not Applicable   [Release: N/A to N/A]
Information in this document applies to any platform.

Symptoms

Sometimes logs like "No SOF interrupts have been received, this USB OHCI hostcontroller is unusable" are displayed at boot time:

Jul 11 01:21:40 cs3pdb02 genunix: [ID 540533 kern.notice] ^MSunOS Release 5.10 Version Generic_118833-36 64-bit
...
Jul 11 01:22:15 cs3pdb02 usba: [ID 691482 kern.warning] WARNING: /pci@9c,700000/usb@3,3 (ohci2): No SOF interrupts have been received, this USB OHCI hostcontroller is unusable
Jul 11 01:22:52 cs3pdb02 usba: [ID 691482 kern.warning] WARNING: /pci@9c,700000/usb@3,3 (ohci2): No SOF interrupts have been received, this USB OHCI hostcontroller is unusable
Jul 11 01:22:56 cs3pdb02 usba: [ID 691482 kern.warning] WARNING: /pci@9c,700000/usb@3,3 (ohci2): No SOF interrupts have been received, this USB OHCI hostcontroller is unusable
Jul 11 02:46:49 cs3pdb02 usba: [ID 691482 kern.warning] WARNING: /pci@9c,700000/usb@3,3 (ohci2): No SOF interrupts have been received, this USB OHCI hostcontroller is unusable

Cause

Starcat hardware issue involving the absence of connections for USB. Starcat was never intended to support USB devices. These errors are harmless and can be repressed by adding an entry to /etc/system.

Errors regarding feature that is not supported by SF15k

Solution

Adding the following to the /etc/system file repressed the error messages:

Internal Section

References:
Bug 6203994: No SOF interrupts have been received, this USB OHCI host controller is unusable



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