Alan Stern wrote:
On Thu, 28 May 2009, Andrew Morton wrote:
(switched to email. Please respond via emailed reply-to-all, not via the
bugzilla web interface).
On Thu, 14 May 2009 07:37:21 GMT bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote:
http://bugzilla.kernel.org/show_bug.cgi?id=13304
Summary: ehci_hcd module causing problems in using usb head
phone
when ehci_hcd module is loaded, and I try to play or record using usb head
phone
keyboard and mouse stops working that freezes the system.
kernel throws the error
cannot submit datapipe for urb 0, error -28
Error -28 means that there is not enough bandwidth available on the USB
bus.
What does the dmesg log say?
Alan Stern
The dmesg log when capturing audio through the headphone is
cannot submit datapipe for urb 0, error -28: not enough bandwidth
The dmesg log when playing audio through the headphone is
hub 1-0:1.0: resubmit --> -108
hub 1-0:1.0: hub_port_status failed (err = -108)
hub 1-0:1.0: hub_port_status failed (err = -108)
hub 1-0:1.0: hub_hub_status failed (err = -108)
hub 1-0:1.0: get_hub_status failed
On command prompt once it gave the error
PS3YDL Kernel : Disabling IRQ#50
And after that mouse and keyboard stopped working.
When I remove the ehci_hcd module using command rmmod
then USB headphone works fine .
This USB headphone is a full speed device , so even when ehci_hcd
module is there this device should be
handled by the companion driver that is UHCI or OHCI.
Thanks,
Abhishek Kumar
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