linux-kernel - Re: [PATCH v8 4/6] media: platform: synopsys: Add support for HDMI input driver

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Message-ID: <29687c3c-d983-4d1f-8cde-fde82df84e0e@wanadoo.fr>
Date: Mon, 24 Feb 2025 20:16:23 +0100
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Dmitry Osipenko <dmitry.osipenko@...labora.com>,
 Shreeya Patel <shreeya.patel@...labora.com>, Heiko Stuebner
 <heiko@...ech.de>, Mauro Carvalho Chehab <mchehab@...nel.org>,
 Hans Verkuil <hverkuil@...all.nl>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, jose.abreu@...opsys.com, nelson.costa@...opsys.com,
 shawn.wen@...k-chips.com, nicolas.dufresne@...labora.com,
 Sebastian Reichel <sebastian.reichel@...labora.com>
Cc: kernel@...labora.com, linux-media@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-rockchip@...ts.infradead.org, Tim Surber <me@...surber.de>
Subject: Re: [PATCH v8 4/6] media: platform: synopsys: Add support for HDMI
 input driver

Le 24/02/2025 à 05:19, Dmitry Osipenko a écrit :
> On 2/24/25 00:11, Christophe JAILLET wrote:
>>>>
>>>>> +    ret = cec_register_adapter(cec->adap, cec->dev);
>>>>> +    if (ret < 0) {
>>>>> +        dev_err(cec->dev, "cec register adapter failed\n");
>>>>> +        cec_unregister_adapter(cec->adap);
>>>>
>>>> Is it needed to call cec_unregister_adapter() when
>>>> cec_register_adapter() fails?
>>>
>>> Yes, it's confusing, but unregister is needed to free the adapter
>>> properly, it's prepared to do it. Thanks for the review.
>>>
>>
>> I don't know this API, so you'll get the last word, but
>> cec_unregister_adapter() does not seem to do that many things in such a
>> case, unless I miss something. See [1].
>>
>> CJ
>>
>> [1]: https://elixir.bootlin.com/linux/v6.14-rc3/source/drivers/media/
>> cec/core/cec-core.c#L370
> 
> On a second look, apparently you're right and
> cec_notifier_cec_adap_unregister() should be used there.
> 

So, maybe in the .remove() function as well?

CJ