[net-next PATCH] net: Reserve skb headroom and set skb->dev even if using __alloc_skb

[Kevin Hilman]

Alexander Duyck <alexander.h.duyck at redhat.com> writes:

> When I had inlined __alloc_rx_skb into __netdev_alloc_skb and
> __napi_alloc_skb I had overlooked the fact that there was a return in the
> __alloc_rx_skb.  As a result we weren't reserving headroom or setting the
> skb->dev in certain cases.  This change corrects that by adding a couple of
> jump labels to jump to depending on __alloc_skb either succeeding or failing.
>
> Fixes: 9451980a6646 ("net: Use cached copy of pfmemalloc to avoid accessing page")
> Reported-by: Felipe Balbi <balbi at ti.com>
> Signed-off-by: Alexander Duyck <alexander.h.duyck at redhat.com>

Tested this on top of next-20150513 on an ARM/OMAP
(am335x-boneblack.dts) an it fixes the boot problem for me.

Tested-by: Kevin Hilman <khilman at linaro.org>

Kevin