Re: [Bluez-devel] [Regression] Bluetooth RFComm: using it locks up the machine

[Marcel Holtmann <marcel@holtmann.org>]

Hi Mark,

> > Any attempt to open/use a bluetooth rfcomm device locks up
> > scheduling completely on my machine.
> > 
> > Interrupts (ping, alt-sysrq) seem to be alive, but nothing else.
> > 
> > This was working fine in 2.6.20, broken now in 2.6.21-rc2-git*
> 
> Further info:  Reverting this change (below) fixes it:
> 
> | author	Marcel Holtmann <marcel@holtmann.org>
> | 	 Sat, 17 Feb 2007 22:58:57 +0000 (23:58 +0100)
> | committer	David S. Miller <davem@sunset.davemloft.net>
> | 	 Mon, 26 Feb 2007 19:42:41 +0000 (11:42 -0800)
> | commit	c1a3313698895d8ad4760f98642007bf236af2e8
> | tree	337a876f727061362b6a169f8759849c105b8f7a	tree | snapshot
> | parent	f5ffd4620aba9e55656483ae1ef5c79ba81f5403	commit | diff
> | 
> | [Bluetooth] Make use of device_move() for RFCOMM TTY devices
> | 
> | In the case of bound RFCOMM TTY devices the parent is not available
> | before its usage. So when opening a RFCOMM TTY device, move it to
> | the corresponding ACL device as a child. When closing the device,
> | move it back to the virtual device tree.
> | Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
> 
> Specifically, I reverted these changes, below, to fix it:

please post these information to the Linux kernel mailing list, because
I think that must be an issue with the device_move() API. I tested this
successfully with a Quad G5 and it was working as expected.

Regards

Marcel



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