linux-kernel - Re: [PATCH][V3] net: dsa: sja1105: fix check on while loop exit

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Message-Id: <20190508.131357.1972863276402672227.davem@davemloft.net>
Date:   Wed, 08 May 2019 13:13:57 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     colin.king@...onical.com
Cc:     olteanv@...il.com, andrew@...n.ch, vivien.didelot@...il.com,
        f.fainelli@...il.com, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH][V3] net: dsa: sja1105: fix check on while loop exit

From: Colin King <colin.king@...onical.com>
Date: Wed,  8 May 2019 14:30:41 +0100

> From: Colin Ian King <colin.king@...onical.com>
> 
> The while-loop exit condition check is not correct; the
> loop should continue if the returns from the function calls are
> negative or the CRC status returns are invalid.  Currently it
> is ignoring the returns from the function calls.  Fix this by
> removing the status return checks and only break from the loop
> at the very end when we know that all the success condtions have
> been met.
> 
> Kudos to Dan Carpenter for describing the correct fix and
> Vladimir Oltean for noting the change to the check on the number
> of retries.
> 
> Addresses-Coverity: ("Uninitialized scalar variable")
> Fixes: 8aa9ebccae87 ("net: dsa: Introduce driver for NXP SJA1105 5-port L2 switch")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> Tested-by: Vladimir Oltean <olteanv@...il.com>

Applied, thank you.