Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Tue, 13 Apr 2021 01:25:06 +0200
From:   Marek =?UTF-8?B?QmVow7pu?= <kabel@kernel.org>
To:     Pali =?UTF-8?B?Um9ow6Fy?= <pali@kernel.org>
Cc:     Andrew Lunn <andrew@lunn.ch>,
        Vivien Didelot <vivien.didelot@gmail.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Vladimir Oltean <olteanv@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] net: phy: marvell: fix detection of PHY on Topaz
 switches
Message-ID: <20210413012507.355bc809@thinkpad>
In-Reply-To: <20210412165739.27277-1-pali@kernel.org>
References: <20210412121430.20898-1-pali@kernel.org>
        <20210412165739.27277-1-pali@kernel.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Precedence: bulk

> +	/* Some internal PHYs don't have a model number. */
> +	if (reg == MII_PHYSID2 && !(val & 0x3f0) &&
> +	    chip->info->family < ARRAY_SIZE(family_prod_id_table)) {
> +		prod_id = family_prod_id_table[chip->info->family];
> +		if (prod_id)
> +			val |= prod_id >> 4;

Isn't if(prod_id) check redundant here? If prod_id is 0, the |=
statement won't do anything.

Marek