linux-kernel - Re: [PATCH v2 01/13] trinity: Add base driver

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Message-Id: <51275e33-c791-4593-84d1-eedad27d7fd6@www.fastmail.com>
Date:   Thu, 22 Sep 2022 15:56:51 +0200
From:   "Arnd Bergmann" <arnd@...db.de>
To:     "Jiho Chu" <jiho.chu@...sung.com>
Cc:     "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        ogabbay@...nel.org,
        "Krzysztof Kozlowski" <krzysztof.kozlowski@...aro.org>,
        "Mark Brown" <broonie@...nel.org>, linux-kernel@...r.kernel.org,
        yelini.jeong@...sung.com, myungjoo.ham@...sung.com
Subject: Re: [PATCH v2 01/13] trinity: Add base driver

On Sat, Sep 17, 2022, at 4:49 PM, Jiho Chu wrote:
> On Sat, 17 Sep 2022 09:41:13 +0200
> "Arnd Bergmann" <arnd@...db.de> wrote:
>> 
>> If you have the need to manage multiple devices here, maybe use
>> a dynamic major number and have the chardev code allocate the
>> minor numbers, instead of using multiple misc devices and
>> doing that yourself.
>> 
>
> I'm little confusing. It means that managing own char devices is proper,
> not using misc device? But, it's still under misc dir.

There is no strict connection between miscdevices and drivers/misc.

The former is for drivers that tend to have only one instance
in a system, while the latter is for drivers that do not have
a separate subsystem.

     Arnd