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usb: gadget: f_rndis: fix interface id for OS descriptors

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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.

Cc: <stable@vger.kernel.org> # v3.16
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Andrzej Pietrasiewicz 2014-07-01 15:47:47 +02:00 committed by Felipe Balbi
parent 55f7840ac4
commit 4546527350
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/gadget/function/f_rndis.c
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@ -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;