APPLIED: [SRU] [F/G] [PATCH 0/2] Ask 8821C Bluetooth controller to drop old firmware

[William Breathitt Gray]

On Sat, Nov 14, 2020 at 12:15:50AM +0800, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1904221
> 
> [Impact]
> Some platforms may keep USB power in S3/S4/S5, so Realtek 8821C retains
> its firmware even with a cold boot.
> 
> [Fix]
> Use vendor command to drop firmware if the version is old.
> 
> [Test case]
> Use dmesg to check if new firmware is loaded.
> With the patch applied, we can find new firmware is loaded.
> 
> [Where problems could occur]
> There's a 200ms delay which can slow down when BT controller is opened
> by userspace first time.
> 
> Colin Ian King (1):
>   Bluetooth: btrtl: fix incorrect skb allocation failure check
> 
> Kai-Heng Feng (1):
>   Bluetooth: btrtl: Ask 8821C to drop old firmware
> 
>  drivers/bluetooth/btrtl.c | 46 +++++++++++++++++++++++++++++++++++++++
>  1 file changed, 46 insertions(+)
> 
> -- 
> 2.28.0

Applied to Focal:linux and Groovy:linux.

William Breathitt Gray
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