linux-kernel - Re: [PATCH net] net: phy: realtek: Replace phy functions with non-locked version in rtl8211e_config

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Message-ID: <20190513125002.GB28969@lunn.ch>
Date:   Mon, 13 May 2019 14:50:02 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] net: phy: realtek: Replace phy functions with
 non-locked version in rtl8211e_config_init()

On Mon, May 13, 2019 at 03:41:45PM +0900, Kunihiko Hayashi wrote:
> After calling phy_select_page() and until calling phy_restore_page(),
> the mutex 'mdio_lock' is already locked, so the driver should use
> non-locked version of phy functions. Or there will be a deadlock with
> 'mdio_lock'.
> 
> This replaces phy functions called from rtl8211e_config_init() to avoid
> the deadlock issue.
> 
> Fixes: f81dadbcf7fd ("net: phy: realtek: Add rtl8211e rx/tx delays config")
> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>

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

    Andrew