ubuntu-phone team mailing list archive

[Simon Fels <simon.fels@xxxxxxxxxxxxx>]

On 21.11.2015 01:47, Robert Park wrote:
> On Nov 20, 2015 8:29 AM, "Simon Fels" <simon.fels@xxxxxxxxxxxxx> wrote:
> > Hey everyone,
> >
> > it finally happened: We are switching to BlueZ 5.x on our Touch images on
> all supported devices. To make this happen a huge amount of work through
> the last five months from different people was needed. Thank you all for
> the great work and support to make this happen!
>
> Wow, congrats!
>
> > This is just a first step for better Bluetooth support on Ubuntu Touch.
> We now have the same bluetooth stack in the kernel on all our devices which
> makes it a lot easier to fix bugs at the same time across all our devices.
>
> Does this mean we can finally stop using an ancient kernel in the touch
> stack?

No. And this will never happen. All kernels we have are heavily 
customized from what we have for Linux upstream. Porting over > 10.000 
lines of code in a good quality doesn't make fun nor is it worth the 
work respecting that we don't have any insight through specs or manuals 
on the actual components used.

For Bluetooth what I did was something like

cp -r linux-4.2/net/bluetooth linux-<device>/net/bluetooth

For sure no as easy as this single line but you get the idea. The real 
thing I used for this is the Kernel backports project (see [1]).

regards,
Simon

[1]: https://backports.wiki.kernel.org/index.php/Main_Page