[Bug 215167] Bluetooth: hci0: command 0xfc05 tx timeout

https://bugzilla.kernel.org/show_bug.cgi?id=215167

--- Comment #17 from Erik Rigtorp (erik@rigtorp.se) ---

(In reply to Takashi Iwai from comment #16)

When you add the BTUSB_INTEL_BROKEN_INITIAL_NCMD flag for your device
(8087:0aa7) in the blacklist_table[] in btusb.c as in comment 13, does it
fix the problem?

Yes, running 5.15.16 tag from linux stable repo with this patch on top fixes
the issue:

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 79d0db542da3..0ed04061823b 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c

@@ -368,7 +368,8 @@ static const struct usb_device_id blacklist_table[] = {
                                                    

BTUSB_INTEL_BROKEN_INITIAL_NCMD },
        { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED },
        { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED },
-       { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED },
+       { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED |
+                                                   
BTUSB_INTEL_BROKEN_INITIAL_NCMD},
        { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED },

        /* Other Intel Bluetooth devices */

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