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Message-ID: <b1adbe2604561e0958bd5084fe679eea@manjaro.org>
Date: Sat, 22 Jun 2024 21:10:52 +0200
From: Dragan Simic <dsimic@...jaro.org>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: Daniel Golle <daniel@...rotopia.org>, Aurelien Jarno
 <aurelien@...el32.net>, Olivia Mackall <olivia@...enic.com>, Herbert Xu
 <herbert@...dor.apana.org.au>, Rob Herring <robh@...nel.org>, Krzysztof
 Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Heiko
 Stuebner <heiko@...ech.de>, Philipp Zabel <p.zabel@...gutronix.de>,
 Uwe Kleine-König <ukleinek@...ian.org>, Sebastian Reichel
 <sebastian.reichel@...labora.com>, Anand Moon <linux.amoon@...il.com>,
 Sascha Hauer <s.hauer@...gutronix.de>, Martin Kaiser <martin@...ser.cx>, Ard
 Biesheuvel <ardb@...nel.org>, linux-crypto@...r.kernel.org,
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/3] hwrng: add Rockchip SoC hwrng driver

Hello Krzysztof,

On 2024-06-22 20:05, Krzysztof Kozlowski wrote:
> On 21/06/2024 20:13, Dragan Simic wrote:
>> On 2024-06-21 11:57, Krzysztof Kozlowski wrote:
>>> On 21/06/2024 03:25, Daniel Golle wrote:
>>>> From: Aurelien Jarno <aurelien@...el32.net>
>> 
>> [snip]
>> 
>>>> +	pm_runtime_set_autosuspend_delay(dev, RK_RNG_AUTOSUSPEND_DELAY);
>>>> +	pm_runtime_use_autosuspend(dev);
>>>> +	pm_runtime_enable(dev);
>>>> +
>>>> +	ret = devm_hwrng_register(dev, &rk_rng->rng);
>>>> +	if (ret)
>>>> +		return dev_err_probe(&pdev->dev, ret, "Failed to register 
>>>> Rockchip
>>>> hwrng\n");
>>>> +
>>>> +	dev_info(&pdev->dev, "Registered Rockchip hwrng\n");
>>> 
>>> Drop, driver should be silent on success.
>> 
>> I respectfully disagree.  Many drivers print a single line upon
>> successful probing, which I find very useful.  In this particular
> 
> No, it's duplicating existing interfaces and polluting log 
> unnecessarily
> without any useful information.

Would you, please, clarify what existing interfaces are you
referring to?

>> case, it's even more useful, because some people may be concerned
>> about the use of hardware TRNGs, so we should actually make sure
>> to announce it.

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