Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 3a5ef20c authored by Marcel Holtmann's avatar Marcel Holtmann Committed by Johan Hedberg
Browse files

Bluetooth: Handle Intel USB bootloader with buggy interrupt 



The interrupt interface for the Intel USB bootloader devices is only
enabled after receiving SetInterface(0, AltSetting=0). When this USB
command is not send, then no HCI events will be received.

Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: default avatarJohan Hedberg <johan.hedberg@intel.com>
parent 223683a5

drivers/bluetooth/btusb.c

+12 −0
Original line number Diff line number Diff line
@@ -1807,6 +1807,18 @@ static int btusb_probe(struct usb_interface *intf, 
		data->isoc = NULL;

	}



	if (id->driver_info & BTUSB_INTEL_BOOT) {

		/* A bug in the bootloader causes that interrupt interface is

		 * only enabled after receiving SetInterface(0, AltSetting=0).

		 */

		err = usb_set_interface(data->udev, 0, 0);

		if (err < 0) {

			BT_ERR("failed to set interface 0, alt 0 %d", err);

			hci_free_dev(hdev);

			return err;

		}

	}



	if (data->isoc) {

		err = usb_driver_claim_interface(&btusb_driver,

							data->isoc, data);