linux-kernel - Re: [PATCH 27/28] rocker: fix maybe-uninitialized warning

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Message-Id: <20161018.142118.319304612159280333.davem@davemloft.net>
Date:   Tue, 18 Oct 2016 14:21:18 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     arnd@...db.de
Cc:     jiri@...nulli.us, torvalds@...ux-foundation.org,
        linux-kernel@...r.kernel.org, idosch@...lanox.com,
        dan.carpenter@...cle.com, netdev@...r.kernel.org
Subject: Re: [PATCH 27/28] rocker: fix maybe-uninitialized warning

From: Arnd Bergmann <arnd@...db.de>
Date: Tue, 18 Oct 2016 00:16:15 +0200

> In some rare configurations, we get a warning about the 'index' variable
> being used without an initialization:
> 
> drivers/net/ethernet/rocker/rocker_ofdpa.c: In function ‘ofdpa_port_fib_ipv4.isra.16.constprop’:
> drivers/net/ethernet/rocker/rocker_ofdpa.c:2425:92: warning: ‘index’ may be used uninitialized in this function [-Wmaybe-uninitialized]
> 
> This is a false positive, the logic is just a bit too complex for gcc
> to follow here. Moving the intialization of 'index' a little further
> down makes it clear to gcc that the function always returns an error
> if it is not initialized.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Applied.