V4L/DVB (8209): uvcvideo: Don't free URB buffers on suspend.
All submitted URBs must be killed at suspend time, but URB buffers don't have to be freed. Avoiding a free on suspend/reallocate on resume lowers the presure on system memory. Signed-off-by: NLaurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
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