From: Eric Dumazet <eric.duma...@gmail.com>
Date: Wed, 18 Jan 2017 12:12:17 -0800
> From: Eric Dumazet <eduma...@google.com>
>
> Ashizuka reported a highmem oddity and sent a patch for freescale
> fec driver.
>
> But the problem root cause is that core networking stack
> must ensure no skb with highmem fragment is ever sent through
> a device that does not assert NETIF_F_HIGHDMA in its features.
>
> We need to call illegal_highdma() from harmonize_features()
> regardless of CSUM checks.
>
> Fixes: ec5f06156423 ("net: Kill link between CSUM and SG features.")
> Signed-off-by: Eric Dumazet <eduma...@google.com>
> Cc: Pravin Shelar <pshe...@ovn.org>
> Reported-by: "Ashizuka, Yuusuke" <ashid...@jp.fujitsu.com>
Applied, thanks Eric.
I guess few devices support SG and lack highmem support.
