[PATCH] staging: Check for Null return of allocated skb in fw_download_code

[Valdis.Kletnieks at vt.edu]

On Wed, 13 Aug 2014 18:50:43 +0400, Max Filippov said:

> No need to trigger it, faking it would be enough, e.g.:

> +                if (++i < 3)
> +                        skb  = dev_alloc_skb(frag_length + 4);
> +                else
> +                        skb = NULL;

Don't bet on this triggering on a real system without some additional
scaffolding - take a look at what the function is doing, and ask yourself
how many times it will be called on the average system :)
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