linux-kernel - Re: [PATCH v5 2/8] net: stmmac: qcom-ethqos: use generic device properties

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Message-ID: <cd7c0490-a2d6-4885-aa36-ee1492f107b8@oss.qualcomm.com>
Date: Thu, 13 Nov 2025 14:32:53 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Bartosz Golaszewski <brgl@...ev.pl>
Cc: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
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        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org,
        Drew Fustini
 <dfustini@...storrent.com>, linux-sunxi@...ts.linux.dev,
        linux-amlogic@...ts.infradead.org, linux-mips@...r.kernel.org,
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        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v5 2/8] net: stmmac: qcom-ethqos: use generic device
 properties

On 11/13/25 2:18 PM, Bartosz Golaszewski wrote:
> On Fri, Nov 7, 2025 at 11:49 AM Konrad Dybcio
> <konrad.dybcio@....qualcomm.com> wrote:
>>
>> On 11/7/25 11:29 AM, Bartosz Golaszewski wrote:
>>> From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
>>>
>>> In order to drop the dependency on CONFIG_OF, convert all device property
>>> getters from OF-specific to generic device properties and stop pulling
>>> in any linux/of.h symbols.
>>>
>>> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
>>> ---
>>
>> [...]
>>
>>> -     if (of_property_read_bool(np, "snps,tso"))
>>> +     if (device_property_present(dev, "snps,tso"))
>>
>> This is a change in behavior - "snps,tso = <0>" would have previously
>> returned false, it now returns true
>>
> 
> This property is a boolean flag, it cannot have a value.

Every DT property may have a value, so this is not as obvious as we'd
like it to be (IIUC - unless that changed recently)

Konrad