Sun Fire[TM] 12K/15K/E20K/E25K: No SOF interrupts have been received, this USB OHCI hostcontroller is unusable (Doc ID 1337295.1)

Last updated on AUGUST 03, 2015

Applies to:

Sun Fire 15K Server - Version Not Applicable to Not Applicable [Release N/A]
Sun Fire E25K Server - Version Not Applicable to Not Applicable [Release N/A]
Sun Fire E20K Server - Version Not Applicable to Not Applicable [Release N/A]
Sun Fire 12K Server - Version Not Applicable to Not Applicable [Release N/A]
Information in this document applies to any platform.
***Checked for relevance on 18-Dec-2012***

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 hostname genunix: [ID 540533 kern.notice] ^MSunOS Release 5.10 Version Generic_118833-36 64-bit
...
Jul 11 01:22:15 hostname 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 hostname 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 hostname 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 hostname 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

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