[regression] Cambridge Silicon Radio, Ltd Bluetooth Dongle unusable

Started by unknown sender on May 30, 2021

DORMANTno replies

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Message details and related content
https://bugzilla.kernel.org/show_bug.cgi?id=60824

Lucas Rizzini (lucasrizzini@hotmail.com) changed:

           What    |Removed                     |Added
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                 CC|                            |lucasrizzini@hotmail.com
--- Comment #184 from Lucas Rizzini (lucasrizzini@hotmail.com) ---
(In reply to Mauro Fontana from comment #67)
Created attachment 289017 [details]
lsusb for bcdDevice 25.20

Okay, managed to compiled the module with the fixups option and loaded.
Unfortunately, although the module loads without problems, the BT adapter
won't work.

hciconfig hci0 up 

ends in connection timed out.

I attach the full lsusb -v output for this device. Is there any other
helpful info I can provide? Being able to solve this would be great, as in
my country all the BT dongles I've seen online are CSR dongles.
Same here. I managed to compile the module on kernel 5.4.6 with the patch that
has the fixups made by Fernando Carvalho, but the symptoms are the same as
without it; no bluetooth adapter found with bluetoothctl or any other front
end. 

Dmesg shows the patch and the fixups are indeed applied.

lsusb -v -> https://pastebin.com/HDc9z10e

/etc/modprobe.d/csr-bluetoothbongle.conf:
<code>options btusb fixups=0x0800000:0x000004:0x0a12:0x0001:0x8891</code>

dmesg:
<code>
[ 2080.767176] usbcore: registered new interface driver btusb
[ 2086.045608] usb 2-4: new full-speed USB device number 11 using xhci_hcd
[ 2086.187920] usb 2-4: config 1 interface 1 altsetting 0 endpoint 0x3 has
wMaxPacketSize 0, skipping
[ 2086.187922] usb 2-4: config 1 interface 1 altsetting 0 endpoint 0x83 has
wMaxPacketSize 0, skipping
[ 2086.188519] usb 2-4: New USB device found, idVendor=0a12, idProduct=0001,
bcdDevice=88.91
[ 2086.188520] usb 2-4: New USB device strings: Mfr=0, Product=2,
SerialNumber=0
[ 2086.188522] usb 2-4: Product: BT DONGLE10
[ 2086.190717] btusb: New fixups. Device: 0x0a12:0x0001/0x8891. Rule 1/1 (5
terms): 0x0a12:0x0001/0x8891
[ 2086.190718] btusb: driver flags: initial => 0x0000000000000004
[ 2086.190719] btusb: driver flags: masked  => 0x0000000000800000</code>

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