diff options
| author | Marcel Holtmann <marcel@holtmann.org> | 2014-07-06 16:53:54 +0400 |
|---|---|---|
| committer | Luis Henriques <luis.henriques@canonical.com> | 2014-12-01 18:45:05 +0300 |
| commit | 9d9d071cef1629b83c37b1af734f6d261acf4afc (patch) | |
| tree | c67de1262d602916d4d3b75d6f2caf6189e3fb5d /drivers/bluetooth | |
| parent | b8405fb66877de9933b02eca4b2539cf0ed9b8e5 (diff) | |
| download | linux-9d9d071cef1629b83c37b1af734f6d261acf4afc.tar.xz | |
Bluetooth: Handle Intel USB bootloader with buggy interrupt
commit 3a5ef20c979c0f33b6fb2582d04957397a6bf51f upstream.
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>
Signed-off-by: Luis Henriques <luis.henriques@canonical.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 1db4a6675151..9c63e20a46a4 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -1699,6 +1699,18 @@ 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); |