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Bluetooth: btusb: Do not require hardcoded interface numbers 

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
View File

@ -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;