linux-kernel - Re: [BUG] usb problems in .38-rc3+

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Date:	Wed, 16 Feb 2011 11:00:53 -0300
From:	"Gustavo F. Padovan" <padovan@...fusion.mobi>
To:	Ed Tomlinson <edt@....ca>
Cc:	linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org,
	linux-usb@...r.kernel.org
Subject: Re: [BUG] usb problems in .38-rc3+

Hi Ed,

* Ed Tomlinson <edt@....ca> [2011-02-05 14:17:57 -0500]:

> Hi,
> 
> My bluetooth usb dongle has stopped working in .38-rc3+
> 
> Bus 002 Device 008: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
> 
> and in dmesg
> 
> [108495.369056] usb 5-1: new full speed USB device using ohci_hcd and address 3
> [108495.573077] usb 5-1: New USB device found, idVendor=0a12, idProduct=0001
> [108495.580099] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
> [108652.971977] usb 5-1: USB disconnect, address 3
> [108652.972718] btusb_bulk_complete: hci0 urb ffff8800684e99c0 failed to resubmit (19)
> [108652.973725] btusb_bulk_complete: hci0 urb ffff8800684e9c00 failed to resubmit (19)
> [108652.974707] btusb_intr_complete: hci0 urb ffff8800684e9840 failed to resubmit (19)
> [108653.001690] btusb_send_frame: hci0 urb ffff8800bb42a240 submission failed
> [108657.007541] usb 2-4.7: new full speed USB device using ehci_hcd and address 8
> [108657.147736] usb 2-4.7: New USB device found, idVendor=0a12, idProduct=0001
> [108657.154954] usb 2-4.7: New USB device strings: Mfr=0, Product=0, SerialNumber=0
> 
> Its been working for years here.
> 
> Any ideas on what to try or additional info to gather?

What's the symptom? what do you mean by stopped to work?

Can you provide me output of "hciconfig -a"?

And if possible enable dynamic debug for your kernel, mount the debugfs 
and then

echo -n "module btusb +p" > /sys/kernel/debug/dynamic_debug/control
echo -n "module bluetooth +p" > /sys/kernel/debug/dynamic_debug/control

-- 
Gustavo F. Padovan
http://profusion.mobi
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