Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 3.16 108/357] usb: gadget: f_rndis: fix interface id for OS descriptors | Date | Fri, 3 Oct 2014 14:28:14 -0700 |
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3.16-stable review patch. If anyone has any objections, please let me know.
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From: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
commit 4546527350c3c508554dff53e9086e9d3de0b97b upstream.
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.
Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/usb/gadget/f_rndis.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -727,6 +727,10 @@ rndis_bind(struct usb_configuration *c, 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;
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