netdev - Re: [PATCH net] net: freescale: fec: Fix ethtool -d runtime PM

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Date:   Fri, 3 Jan 2020 02:01:34 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     David Miller <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>, fugang.duan@....com,
        Chris Healy <Chris.Healy@....aero>
Subject: Re: [PATCH net] net: freescale: fec: Fix ethtool -d runtime PM

> This fix will do, but you should consider implementing
> ethtool_ops::begin and ethtool_ops::end to make sure this condition is
> resolved for all ethtool operations.
> 
> For instance the following looks possibly problematic too:
> fec_enet_set_coalesce -> fec_enet_itr_coal_set

Hi Florian

I did a quick test of all the ethtool operations which the driver
supports, including setting coalescing. I did not exhaustively try all
possible coalescing settings, but the ones i did try did not provoke a
data abort.

Still, it would make sense to implement begin and end, but only for
net-next.

	Andrew