linux-kernel - Re: [PATCH] memory/tegra: Add missing of_node_get() in tegra_emc_find_node_by_ram

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Message-ID: <b3a0b35e-33fc-f7f3-a111-1a88498b4019@linaro.org>
Date:   Wed, 22 Jun 2022 11:08:32 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Liang He <windhl@....com>
Cc:     thierry.reding@...il.com, jonathanh@...dia.com,
        linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org
Subject: Re: [PATCH] memory/tegra: Add missing of_node_get() in
 tegra_emc_find_node_by_ram_code

On 22/06/2022 10:49, Liang He wrote:
> 
> 
> At 2022-06-22 16:41:28, "Krzysztof Kozlowski" <krzysztof.kozlowski@...aro.org> wrote:
>> On 22/06/2022 06:28, Liang He wrote:
>>> of_find_node_by_name() will decrease the refcount of its first arg and
>>> we need to add a of_node_put() to keep refcount balance.
>>>
>>> Besides, during the 'for' loop execution, the refcount of 'np' will be
>>> automatically increased and decreased. There is no need to call
>>> of_node_put() again.
>>>
>>> Signed-off-by: Liang He <windhl@....com>
>>> ---
>>>  drivers/memory/tegra/tegra20-emc.c | 3 ++-
>>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>>
>>
>> The patch was not even compiled... I consider it harmful approach. NAK.
>> See: https://lwn.net/Articles/854645/
>>
>> Best regards,
>> Krzysztof
> 
> Sorry, Krzysztof.
> 
> As the patch is so simple two lines , I thought I can handle it without compiling it.
> 
> Thanks very much for your notice about the article and I hope I have not done anyother harmful things.
> 
> And I will take care of my patch code in future no matter how simple it is.


Never send patches which were not built. It seems you didn't build them
in the past either, even though setting up cross compile is trivial (few
commands). QEMU is also an easy option.

Even though your contribution might be valuable, lack of building is a
sign for me that approach is not serious, so I am not going to take
risky code.

Best regards,
Krzysztof