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 F084E3ECBCF; Fri, 4 Sep 2026 05:48:29 +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=1788500911; cv=none; b=H7MHfEgoDuC8wAImmEO5hbKtrnsNdhHNd1m2L/a8KQYjC7snFHDO36H7oESvwVFWL1nVMTCLIkVqpQEONO/+GENyH2TbFFjdR2oUFnRepJJsihosTb5U9+P9W/c4GQM/RQD2wmsJRuaikvP1dSEQS/zEUX5pDBeYLxuIyEMe6Es= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788500911; c=relaxed/simple; bh=7zqwvXDALoCBUmx2P6UyNis22F1J5BfQPdI4GdXDQ1I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WhaH3BtxkHJbAHYX9SvzpYZtKldDQEbKQ3RNRMciBpgnUFCnQhDP5Eo6SXNfHzgjMQL2yZ3sxRr7XzzmemH4iJsH485/HtnpDDoByLaF8uWFS7NK9TSU/rwgHs2Y6ilUZHpHK0/BtxPUm0MfUBUucGVqRuCpZbmtrBkxYasaCMk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=EIXcjevV; 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="EIXcjevV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 451171F00A3D; Fri, 4 Sep 2026 05:48:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788500909; bh=GpBdm13ufNRiZMN1JdSPTJmiVSQvoRd8lWEe52Map98=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=EIXcjevVFLyVlm+iR76Wc1sdFDKP5XG0mB5PqdSZU0SNKJ0w6iyP/8yY06EZ3DiIf YADW3hCrPTyOUq2JQ+6X8cLs8IkT9xdH+hJx/2GZVnGv/3utPzqEQAXswvZnFl6RU3 aYTF6j2RIM9yksQ0BKN+fFdxJjbPhuOk9JQv1fHQ= 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 6.18 224/552] Bluetooth: btusb: Add ASUS USB-BT540 for Realtek 8761CU Date: Fri, 4 Sep 2026 06:56:21 +0200 Message-ID: <20260904045754.572032923@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260904045747.813364717@linuxfoundation.org> References: <20260904045747.813364717@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 6.18-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 @@ -805,6 +805,10 @@ static const struct usb_device_id quirks { USB_DEVICE(0x37ad, 0x0600), .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 },