On Monday 21 January 2013 15:47:13 Bjørn Mork wrote:
> But I wonder if this isn't really a generic problem in usbnet. The
> FLAG_MULTI_PACKET test here seems completely bogus:
>
> if (length % dev->maxpacket == 0) {
> if (!(info->flags & FLAG_SEND_ZLP)) {
> if (!(info->flags & FLAG_MULTI_PACKET)) {
> urb->transfer_buffer_length++;
> if (skb_tailroom(skb)) {
> skb->data[skb->len] = 0;
> __skb_put(skb, 1);
> }
> }
> } else
> urb->transfer_flags |= URB_ZERO_PACKET;
> }
>
> Either the FLAG_MULTI_PACKET minidriver will have already padded the
> buffer so that we do not hit (length % dev->maxpacket == 0), or we
> should choose one of the alternatives: ZLP or padding.
But we cannot simply call __skb_put for a complicated data frame.
Besides you may want the current behavior.
Regards
Oliver
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