static int
uvc_video_alloc_requests(struct uvc_video *video)
{
+ unsigned int req_size;
unsigned int i;
int ret = -ENOMEM;
BUG_ON(video->req_size);
+ req_size = video->ep->maxpacket
+ * max_t(unsigned int, video->ep->maxburst, 1)
+ * (video->ep->mult + 1);
+
for (i = 0; i < UVC_NUM_REQUESTS; ++i) {
- video->req_buffer[i] = kmalloc(video->ep->maxpacket, GFP_KERNEL);
+ video->req_buffer[i] = kmalloc(req_size, GFP_KERNEL);
if (video->req_buffer[i] == NULL)
goto error;
video->req[i]->buf = video->req_buffer[i];
video->req[i]->length = 0;
- video->req[i]->dma = DMA_ADDR_INVALID;
video->req[i]->complete = uvc_video_complete;
video->req[i]->context = video;
list_add_tail(&video->req[i]->list, &video->req_free);
}
- video->req_size = video->ep->maxpacket;
+ video->req_size = req_size;
+
return 0;
error: