Commit 6c7d6772 authored Apr 07, 2014 by Sujeet Kumar

USB: u_bam: Reserve skb headroom only if needed



Check if skb headroom is not available, then
reserve headroom.

Incase this is not done, it leads to skb_panic
because skb head would become lesser than skb
data.

CRs-Fixed: 644290
Change-Id: I9754abd01833d264ad0a73152c8a49be19364246
Signed-off-by: Sujeet Kumar <ksujeet@codeaurora.org>

parent e3b81210

drivers/usb/gadget/u_bam.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -244,6 +244,8 @@ static struct sk_buff gbam_alloc_skb_from_pool(struct gbam_port port)
		} else {
		pr_debug("%s: pull skb from pool\n", __func__);
		skb = __skb_dequeue(&d->rx_skb_idle);
		if (skb_headroom(skb) < BAM_MUX_HDR)
		skb_reserve(skb, BAM_MUX_HDR);
		}

		spin_unlock_irqrestore(&port->port_lock_ul, flags);