Re: bluetooth pairing issue in kernel 2.6.27

[Marcel Holtmann <marcel@holtmann.org>]

Hi,

> When pairing two Android devices which are supported by Bluez on
> kernel 2.6.27, it will always fail if the user can't finish the whole
> procedure in 10 seconds. After some analysis we found the root cause
> is that Bluez's HCI link's time out timer is set to 10s in the kernel,
> and in Bluez's create_bonding() function it calls l2raw_connect() to
> create only HCI link without L2CAP channel.
> 
> One easy way to fix this issue is to create L2CAP link when creating
> bonding, but this is not a final solution, because
> according to Bluetooth Specification, creating L2CAP link is only
> optional in the bonding establishment procedure, so the thorough way
> to fix it is to alter the HCI link's time out timer when handling
> bonding request.
> 
> Does anyone know has this been fixed on Bluez kernel's patch on
> 2.6.27, or on the 2.6.29 and later's kernel?

the 2.6.30-rc6 kernel should contains fixes for this to make pairing
smooth with either Legacy or Simple Pairing.

Regards

Marcel