linux-kernel - Re: [PATCH 20/28] net: bcm63xx: avoid referencing uninitialized variable

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Message-Id: <20161018.142104.1792947498376488428.davem@davemloft.net>
Date:   Tue, 18 Oct 2016 14:21:04 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     arnd@...db.de
Cc:     torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
        tremyfr@...il.com, f.fainelli@...il.com,
        bcm-kernel-feedback-list@...adcom.com, andrew@...n.ch,
        netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 20/28] net: bcm63xx: avoid referencing uninitialized
 variable

From: Arnd Bergmann <arnd@...db.de>
Date: Tue, 18 Oct 2016 00:16:08 +0200

> gcc found a reference to an uninitialized variable in the error handling
> of bcm_enet_open, introduced by a recent cleanup:
> 
> drivers/net/ethernet/broadcom/bcm63xx_enet.c: In function 'bcm_enet_open'
> drivers/net/ethernet/broadcom/bcm63xx_enet.c:1129:2: warning: 'phydev' may be used uninitialized in this function [-Wmaybe-uninitialized]
> 
> This makes the use of that variable conditional, so we only reference it
> here after it has been used before. Unlike my normal patches, I have not
> build-tested this one, as I don't currently have mips test in my
> randconfig setup.
> 
> Fixes: 625eb8667d6f ("net: ethernet: broadcom: bcm63xx: use phydev from struct net_device")
> Cc: Philippe Reynes <tremyfr@...il.com>
> Reported-by: kbuild test robot <fengguang.wu@...el.com>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Applied.