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<0cf3aaf2-9911-4918-8f6f-c11d6077d39b@leemhuis.info> References: <0cf3aaf2-9911-4918-8f6f-c11d6077d39b@leemhuis.info> X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:SwOeEke6jMmGJ3rFIcPIGcokqfXxSxdPALB3a+wgHSZUHS/FqrB TcdanMyQFgKPEdKW2dp0UXFiwm5B3U77cHrjyHHLc64y2yEXPAEcBj2DmKzieQlaOC2Jc99 CZaS5iRxomJS/PPEBb1KGi+9uAe7zbcLqb+2FXFDVv1DYN3tLMVNuauDJZ9KSzTgw1oi9AE bQOIVl6tB7fbfnPXy+1qw== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:5Pjwte9dNI0=;ndSHZ6UfCHGaI1uQ1Qfn5ll4sy7 jPKCER35w7Fr+PTvDPEFU4dDCGzamnUvm994N7cmVSXREk3Am3pF8uix5JEc3gZb1j5bUJUvb yA5wddml7VgGT3EM2YlxWfF9UHYrHGISdkj1+Huw57Kmf3jREMIH3+a3vqHwQd8b8zVEnpP/B b9JJVb8n2F3Co+V0s9ZIe2JIISoMIJRwR8VxXOiTbH7iYuXz9VRWKPhys3XrVEy6HByQK7tgi 7URzEMyMsrhsFP/Yzzoa1nhvKKiy2Zxf5D7JgqgOBWQhV+8A6tCIMse947q2kiOq0WgmfSVnK 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With the device ID in the table, the adapter is handed over to btrtl, which in this tree, together with the backport of commit 4a23ce935f74 ("Bluetooth: btrtl: Add the support for RTL8761CUV"), now requires rtl_bt/rtl8761cu_fw.bin. That file is only shipped by linux-firmware since 20251111. On systems with older firmware packages, such as Debian trixie, the adapter no longer initializes. Without the ID entry it binds via the generic Bluetooth class and works on its ROM firmware, as it did before the backport. Mainline keeps the ID entry, so this revert is for 6.12.y only, as agreed in the regression thread. Reported-by: Erik Brangs Closes: https://bugs.debian.org/1149377 Link: https://lore.kernel.org/all/179104011040.2214689.5921682013387867802= @eldamar.lan/ Signed-off-by: Christoph Zwerschke =2D-- Not tested on 6.12.y. The same change was tested on 6.18.55 with both adapters and without rtl8761cu_fw.bin: with the ID entries they fail to initialize, with both reverts they come up on ROM firmware and A2DP works. drivers/bluetooth/btusb.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 00aa0fffd0c9..bb83dc0b031e 100644 =2D-- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -820,8 +820,6 @@ static const struct usb_device_id quirks_table[] =3D { /* Additional Realtek 8761CU Bluetooth devices */ { USB_DEVICE(0x0b05, 0x1bef), .driver_info =3D BTUSB_REALTEK | BTUSB_WIDEBAND_SPEECH }, - { USB_DEVICE(0x0b05, 0x1d70), .driver_info =3D BTUSB_REALTEK | - BTUSB_WIDEBAND_SPEECH }, =20 /* Additional Realtek 8821AE Bluetooth devices */ { USB_DEVICE(0x0b05, 0x17dc), .driver_info =3D BTUSB_REALTEK }, =2D-=20 2.56.0