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Date:   Thu, 29 Dec 2022 16:06:17 -0500
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To:     marcel@holtmann.org, johan.hedberg@gmail.com, luiz.dentz@gmail.com
Cc:     linux-bluetooth@vger.kernel.org
From:   Robert Lippmann <robert.m.lippmann@gmail.com>
Subject: Ugreen Bluetooth 5.3 adapter
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Hi all,

I've been working on trying to get this to work.

I've applied this patch:

https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=0bb039f39058

But I was still getting the following error:

Bluetooth: hci0: Opcode 0x c5a failed: -56

I added

set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER,&hdev->quirks);

as an additional quirk for the device, but now I'm getting

Bluetooth: hci0: Opcode 0x202e failed: -56

Which tells me that HCI_OP_LE_SET_RPA_TIMEOUT isn't supported. I'm not 
at all familiar with the linux bluetooth drivers, so I'm not sure how to 
work around this.  I didn't see another quirk I could register.

Any advice?

TIA