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Subject: Re: [PATCH 04/20] dlb2: add device ioctl layer and first 4 ioctls
To:     Gage Eads <gage.eads@intel.com>, linux-kernel@vger.kernel.org,
        arnd@arndb.de, gregkh@linuxfoundation.org
Cc:     magnus.karlsson@intel.com, bjorn.topel@intel.com
References: <20200712134331.8169-1-gage.eads@intel.com>
 <20200712134331.8169-5-gage.eads@intel.com>
From:   Randy Dunlap <rdunlap@infradead.org>
Message-ID: <68d23285-9028-a70d-1dee-f044c507109d@infradead.org>
Date:   Sun, 12 Jul 2020 07:42:15 -0700
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On 7/12/20 6:43 AM, Gage Eads wrote:
> +/********************/
> +/* dlb2 ioctl codes */
> +/********************/
> +
> +#define DLB2_IOC_MAGIC  'h'

Hi,
This magic value should be documented in
Documentation/userspace-api/ioctl/ioctl-number.rst.

thanks.
-- 
~Randy