From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6E9DD3E49C0; Fri, 4 Sep 2026 06:11:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788502306; cv=none; b=XO5MaJuKX3jQF/A17XNSJ4tibeKA2xwBni7PDyCJJDM6p62+HP+V/4tARXwt/CiZ3yMk/IAneBeqvfRBz+yjdj+33yM8zn0ghRMhQYXNFf8mRd7YzJZhBUErPBHLlcfvBctb/Xb4TOCYRBjvUOM2J/NeDW6Jy0OedptjSfMx9NM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788502306; c=relaxed/simple; bh=7PSt0Kihu8URXlsNS7Dvs0bHHaLTpuHhlj7Ly9FdBag=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=oA8LPxAuazxgmJAI8UVMm4OmURgzAHRI4TQtkjRjJ37YtrFMkdKmNKNv6uKRvXcXHLAsVjfO6DpWTULDgyI9/7FZCbjvLA6Jlcle7m+ti/swBDkmcRGYdX8/jBXF2BqeW526bceP+ySriFSOOr5PvuwOwiNpR3yhy1ErNmVn8es= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=gKj90YE9; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="gKj90YE9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BEF211F00A3D; Fri, 4 Sep 2026 06:11:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788502305; bh=Izmf//9r78mET5kk1mOBUl4Rw/FJK6sMf520Vp0qsqE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=gKj90YE9zX2FboE2KGKPRmPzFAK8nU1Kw9qntCyzO0eBlyBgbc69hQbqB7CW3YELd Xv3jJZF82kAzSGbkZ/OWuMnfA6n82HEaRGilWuBBCwNmn752cJVqxWauZtnFpjW9CZ dIvw2aKAxb8n1GMr/yG72lapTpuoNMLf/O7NGzMI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Christoph Zwerschke , Paul Menzel , Luiz Augusto von Dentz Subject: [PATCH 6.12 161/403] Bluetooth: btusb: Add ASUS USB-BT540 for Realtek 8761CU Date: Fri, 4 Sep 2026 06:59:24 +0200 Message-ID: <20260904045738.512064718@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260904045734.806166532@linuxfoundation.org> References: <20260904045734.806166532@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Christoph Zwerschke commit 980084de4d9b25193398d89a1c0430ba3501b683 upstream. Add the vendor/product ID (0x0b05, 0x1bef) to the usb_device_id table for the Realtek RTL8761CU-based ASUS USB-BT540 adapter. It binds via the generic Bluetooth class today, so BTUSB_REALTEK is never set and the rtl8761cu firmware is not loaded, leaving the controller non-functional. With the entry the driver loads rtl_bt/rtl8761cu_fw.bin (already shipped by linux-firmware) and the adapter works (tested: A2DP and ASHA). Similar to commit bc597f0cc44f ("Bluetooth: btusb: Add TP-Link UB600 for Realtek 8761BUV"). Device info from /sys/kernel/debug/usb/devices: T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 22 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0b05 ProdID=1bef Rev= 2.00 S: Manufacturer=Realtek S: Product=Bluetooth Controller C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=81(I) Atr=03(Int.) MxPS= 64 Ivl=1ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms I: If#= 1 Alt= 6 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 63 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 63 Ivl=1ms Cc: stable@vger.kernel.org Signed-off-by: Christoph Zwerschke Reviewed-by: Paul Menzel Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Greg Kroah-Hartman --- drivers/bluetooth/btusb.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -783,6 +783,10 @@ static const struct usb_device_id quirks { USB_DEVICE(0x2b89, 0x6275), .driver_info = BTUSB_REALTEK | BTUSB_WIDEBAND_SPEECH }, + /* Additional Realtek 8761CU Bluetooth devices */ + { USB_DEVICE(0x0b05, 0x1bef), .driver_info = BTUSB_REALTEK | + BTUSB_WIDEBAND_SPEECH }, + /* Additional Realtek 8821AE Bluetooth devices */ { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK }, { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },