usb: gadget: f_uvc: Fix SuperSpeed companion descriptor's wBytesPerInterval

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commit 09424c50b7 upstream.

The streaming_maxburst module parameter is 0 offset (0..15)
so we must add 1 while using it for wBytesPerInterval
calculation for the SuperSpeed companion descriptor.

Without this host uvcvideo driver will always see the wrong
wBytesPerInterval for SuperSpeed uvc gadget and may not find
a suitable video interface endpoint.
e.g. for streaming_maxburst = 0 case it will always
fail as wBytePerInterval was evaluating to 0.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Roger Quadros 2017-03-08 16:05:43 +02:00 • committed by Greg Kroah-Hartman

parent ff8d97a822

commit d8ec35ad8b

1 changed files with 1 additions and 1 deletions

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drivers/usb/gadget/function/f_uvc.c

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