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Bluetooth: btusb: Do not require hardcoded interface numbers

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Remove hardcoded interface number check because Bluetooth specification
since version 4.0 only recommends and no longer requires specific
interface numbers.

While earlier Bluetooth versions, i.e. 2.1 + EDR and 3.0 + HS, contain
required configuration table in Volume 4 - Host Controller Interface
Part B - USB Transport Layer, Bluetooth Core Specification Addendum 2
changes the table from required to recommended configuration.

Signed-off-by: Tomasz Moń <tomasz.mon@nordicsemi.no>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Tomasz Moń 2023-02-07 12:57:41 +01:00 committed by Luiz Augusto von Dentz
parent a80d2c545d
commit c13380a555
1 changed files with 3 additions and 7 deletions
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10
drivers/bluetooth/btusb.c
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@ -3831,13 +3831,9 @@ static int btusb_probe(struct usb_interface *intf,
BT_DBG("intf %p id %p", intf, id);
/* interface numbers are hardcoded in the spec */
if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
if (!(id->driver_info & BTUSB_IFNUM_2))
return -ENODEV;
if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
return -ENODEV;
}
if ((id->driver_info & BTUSB_IFNUM_2) &&
(intf->cur_altsetting->desc.bInterfaceNumber != 2))
return -ENODEV;
ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;