f->os_desc_table[0].if_id is zero by default. If the actual id happens to be different then no Feature Descriptors will be returned to the host for this interface, so assign if_id as soon as it is known. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx --- This is a backport of the commit: 4546527350c3c508554dff53e9086e9d3de0b97b [PATCH] usb: gadget: f_rndis: fix interface id for OS descriptors Please apply to 3.16-stable. drivers/usb/gadget/f_rndis.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index 9c41e95..ddb09dc 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -727,6 +727,10 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) rndis_control_intf.bInterfaceNumber = status; rndis_union_desc.bMasterInterface0 = status; + if (cdev->use_os_string) + f->os_desc_table[0].if_id = + rndis_iad_descriptor.bFirstInterface; + status = usb_interface_id(c, f); if (status < 0) goto fail; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html