netdev - Re: [PATCH net-next] net: phy: icplus: Call phy_restore_page() when phy_select

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Message-ID: <5b9d452ecbbce752c0eb85ad8a0ccce4@walle.cc>
Date:   Wed, 17 Feb 2021 08:52:08 +0100
From:   Michael Walle <michael@...le.cc>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH net-next] net: phy: icplus: Call phy_restore_page() when
 phy_select_page() fails

Am 2021-02-17 07:17, schrieb Dan Carpenter:
> Smatch warns that there is a locking issue in this function:
> 
> drivers/net/phy/icplus.c:273 ip101a_g_config_intr_pin()
> warn: inconsistent returns '&phydev->mdio.bus->mdio_lock'.
>   Locked on  : 242
>   Unlocked on: 273
> 
> It turns out that the comments in phy_select_page() say we have to call
> phy_restore_page() even if the call to phy_select_page() fails.
> 
> Fixes: f9bc51e6cce2 ("net: phy: icplus: fix paged register access")
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

Reviewed-by: Michael Walle <michael@...le.cc>

-michael