linux-kernel - Re: [PATCH net-next 2/4] net: phy: dp83869: Set opmode from straps

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Message-ID: <65e1b5ca-680e-f82d-cde4-3d5a3eb40884@ti.com>
Date:   Tue, 19 May 2020 12:40:18 -0500
From:   Dan Murphy <dmurphy@...com>
To:     Jakub Kicinski <kuba@...nel.org>
CC:     <andrew@...n.ch>, <f.fainelli@...il.com>, <hkallweit1@...il.com>,
        <davem@...emloft.net>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: Re: [PATCH net-next 2/4] net: phy: dp83869: Set opmode from straps

Jakub

On 5/19/20 11:58 AM, Jakub Kicinski wrote:
> On Tue, 19 May 2020 09:18:11 -0500 Dan Murphy wrote:
>> If the op-mode for the device is not set in the device tree then set
>> the strapped op-mode and store it for later configuration.
>>
>> Signed-off-by: Dan Murphy <dmurphy@...com>
> ../drivers/net/phy/dp83869.c: In function0 dp83869_set_strapped_mode:
> ../drivers/net/phy/dp83869.c:171:10: warning: comparison is always false due to limited range of data type [-Wtype-limits]
>    171 |  if (val < 0)
>        |          ^

This looks to be a false positive.

phy_read_mmd will return an errno or a value from 0->15

So if errno is returned then this will be true.

Unless I have to do IS_ERR.

I did not get that warning.  But I am using 9.2-gcc.

What compiler are you using?

Dan