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Subject[PATCH 3.16 078/178] usb: gadget: uvc: Fix endianness mismatches
3.16.46-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

commit e102609f107269fbc04af21548e78e99c02b6204 upstream.

The struct usb_endpoint_descriptor wMaxPacketSize field the struct
usb_ss_ep_comp_descriptor wBytesPerInterval field are stored in
little-endian format. Convert the values from CPU order to little endian
before storing the values.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
[bwh: Backported to 3.16: adjust filename, context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/gadget/f_uvc.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)

--- a/drivers/usb/gadget/f_uvc.c
+++ b/drivers/usb/gadget/f_uvc.c
@@ -611,19 +611,21 @@ uvc_function_bind(struct usb_configurati
max_packet_size = streaming_maxpacket / 3;
}

- uvc_fs_streaming_ep.wMaxPacketSize = min(streaming_maxpacket, 1023U);
+ uvc_fs_streaming_ep.wMaxPacketSize =
+ cpu_to_le16(min(streaming_maxpacket, 1023U));
uvc_fs_streaming_ep.bInterval = streaming_interval;

- uvc_hs_streaming_ep.wMaxPacketSize = max_packet_size;
- uvc_hs_streaming_ep.wMaxPacketSize |= ((max_packet_mult - 1) << 11);
+ uvc_hs_streaming_ep.wMaxPacketSize =
+ cpu_to_le16(max_packet_size | ((max_packet_mult - 1) << 11));
uvc_hs_streaming_ep.bInterval = streaming_interval;

- uvc_ss_streaming_ep.wMaxPacketSize = max_packet_size;
+ uvc_ss_streaming_ep.wMaxPacketSize = cpu_to_le16(max_packet_size);
uvc_ss_streaming_ep.bInterval = streaming_interval;
uvc_ss_streaming_comp.bmAttributes = max_packet_mult - 1;
uvc_ss_streaming_comp.bMaxBurst = streaming_maxburst;
uvc_ss_streaming_comp.wBytesPerInterval =
- max_packet_size * max_packet_mult * streaming_maxburst;
+ cpu_to_le16(max_packet_size * max_packet_mult *
+ streaming_maxburst);

/* Allocate endpoints. */
ep = usb_ep_autoconfig(cdev->gadget, &uvc_control_ep);
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