APPLIED: [linux-firmware][PATCH 0/1][SRU][B/D] Update firmware file for Intel Bluetooth 9260

[Seth Forshee]

On Fri, Oct 25, 2019 at 03:59:14PM +0800, You-Sheng Yang wrote:
> From: You-Sheng Yang <vicamo at gmail.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/1849779
> 
> [Impact]
> On some platform, with Intel 9260 Bluetooth fw ver < REL0472, deep
> suspend (S3) will be interrupted and resume automatically once it has
> been paired with a BLE device. The device doesn't have to remain
> connected, as long as there are BLE devices near by broadcasting LE
> ADV.
> 
> This doesn't seem to apply to all platforms with 9260, as there are
> other platforms with identical chip and fw version but are immune from
> this issue.
> 
> [Fix]
> This can be fixed with newer (>= REL0472) release of fw blob
> intel/ibt-18-16-1.sfi:
> 
>   |commit      |fw rev|4.15.0-66-generic|series|
>   |------------|------|-----------------|------|
>   |c2d8f1b7f820|  0329|         waked up|bionic|
>   |ae90c3bce108|  0386|         waked up|      |
>   |046d1085b19e|  0420|         waked up| disco|
>   |1e8253bbaafb|  0450|         waked up|      |
>   |7444ca40083a|  0472|               ok|      |
>   |fe48882708de|  0482|               ok|  eoan|
> 
> This patch will SRU 0482 to keep synced with eoan.
> 
> [Test Case]
> 1. pair with BLE device and turn off the device. It should be listed
>    as Disconnected in System Bluetooth settings. Close the settings
>    app as well.
> 2. run `sudo btmon -t` in the background, make sure LE ADV packets
>    pop up.
> 3. run `sudo btmon -t` on another host to make sure there are LE ADV
>    packets during the suspend period.
> 3. trigger system deep suspend (S3) on DUT.
> 4. wait for around 1 minutes (depending on the surrounding
>    environment) and see if the DUT is resumed unsolicitedly.
> 
> [Regression Risk]
> The same process is also verified on Dell Precision 7530 that is also
> equipped with Intel 9260 Bluetooth. However, although also has
> linux-firmware 1.173.9 installed (fw REL0329), this platform doesn't
> have such unsolicited resume problem. With fw upgraded to proposed
> REL0482, there is no known regression found in the suspend/resume and
> other functions. Low.

Applied for bionic/disco, thanks!