netdev - Re: [PATCH][next] net: phy: dp83869: fix return of uninitialized variable ret

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Date:   Tue, 19 Nov 2019 00:29:12 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Colin King <colin.king@...onical.com>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Dan Murphy <dmurphy@...com>, netdev@...r.kernel.org,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] net: phy: dp83869: fix return of uninitialized
 variable ret

On Mon, Nov 18, 2019 at 11:48:35AM +0000, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> In the case where the call to phy_interface_is_rgmii returns zero
> the variable ret is left uninitialized and this is returned at
> the end of the function dp83869_configure_rgmii.  Fix this by
> returning 0 instead of the uninitialized value in ret.
> 
> Addresses-Coverity: ("Uninitialized scalar variable")
> Fixes: 01db923e8377 ("net: phy: dp83869: Add TI dp83869 phy")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

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

Dan: phy_modify_mmd() could fail. You check the return value for
phy_read and phy_write, so it would be consistent to also check

	 Andrew