diff options
| author | Marcel Holtmann <marcel@holtmann.org> | 2014-07-06 14:53:54 +0200 |
|---|---|---|
| committer | Johan Hedberg <johan.hedberg@intel.com> | 2014-07-06 16:16:05 +0300 |
| commit | 3a5ef20c979c0f33b6fb2582d04957397a6bf51f (patch) | |
| tree | 4346ac28f1cc002b52fb6240500a7985bf7baa3c /drivers/bluetooth | |
| parent | 223683a54bf3f371683c401b9a759c54e1452fa3 (diff) | |
| download | op-kernel-dev-3a5ef20c979c0f33b6fb2582d04957397a6bf51f.zip op-kernel-dev-3a5ef20c979c0f33b6fb2582d04957397a6bf51f.tar.gz | |
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: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/btusb.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 14314a1..fe24f60 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -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); |
