Re: [PATCH v2] Bluetooth: btrtl: Ask 8821C to drop old firmware

[Marcel Holtmann]

Hi Kai-Heng,

> Some platforms keep USB power even when they are powered off and in S5,
> this makes Realtek 8821C keep its firmware even after a cold boot, and
> make 8821C never load new firmware.
> 
> So use vendor specific HCI command to ask 8821C drop its firmware after
> system shutdown.
> 
> Newer firmware doesn't have this issue so we only use this trick for old
> 8821C firmware version.
> 
> Suggested-by: Max Chou <max.chou@xxxxxxxxxxx>
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>
> ---
> v2:
> - Fix incorrect parAnthesis on le16_to_cpu.
> - Ensure firmware gets re-uploaded in initialization.
> 
> drivers/bluetooth/btrtl.c | 46 +++++++++++++++++++++++++++++++++++++++
> 1 file changed, 46 insertions(+)

patch has been applied to bluetooth-next tree.

Regards

Marcel