linux-kernel - Re: [PATCH v2] net: stmmac: Fix signedness bug in stmmac_probe_config

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Message-ID: <20200818170448.GH2330298@lunn.ch>
Date:   Tue, 18 Aug 2020 19:04:48 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     YueHaibing <yuehaibing@...wei.com>
Cc:     peppe.cavallaro@...com, alexandre.torgue@...com,
        joabreu@...opsys.com, davem@...emloft.net, kuba@...nel.org,
        mcoquelin.stm32@...il.com, ajayg@...dia.com,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] net: stmmac: Fix signedness bug in
 stmmac_probe_config_dt()

On Tue, Aug 18, 2020 at 11:15:00PM +0800, YueHaibing wrote:
> The "plat->phy_interface" variable is an enum and in this context GCC
> will treat it as an unsigned int so the error handling is never
> triggered.
> 
> Fixes: b9f0b2f634c0 ("net: stmmac: platform: fix probe for ACPI devices")
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>

Hi YueHaibing

Please take a look at:

commit 0c65b2b90d13c1deaee6449304dd367c5d4eb8ae
Author: Andrew Lunn <andrew@...n.ch>
Date:   Mon Nov 4 02:40:33 2019 +0100

    net: of_get_phy_mode: Change API to solve int/unit warnings

You probably want to follow this basic idea.

    Andrew