netdev - Re: [PATCH v3 net-next 10/15] net: aquantia: introduce fwreq mutex

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Message-ID: <20190426212008.GR4041@lunn.ch>
Date:   Fri, 26 Apr 2019 23:20:08 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Igor Russkikh <Igor.Russkikh@...antia.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Nikita Danilov <Nikita.Danilov@...antia.com>,
        Dmitry Bogdanov <Dmitry.Bogdanov@...antia.com>
Subject: Re: [PATCH v3 net-next 10/15] net: aquantia: introduce fwreq mutex

On Fri, Apr 26, 2019 at 09:48:02AM +0000, Igor Russkikh wrote:
> From: Nikita Danilov <ndanilov@...antia.com>
> 
> Some of FW operations could be invoked simultaneously,
> from f.e. ethtool context and from service service activity work.
> Here we introduce a fw mutex to secure and serialize access
> to FW logic.
> 
> Signed-off-by: Nikita Danilov <ndanilov@...antia.com>
> Signed-off-by: Igor Russkikh <igor.russkikh@...antia.com>

I still think it would be a good idea to put in the low level code a
check that the mutex is actually held when talking to the firmware.

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew