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Date:   Fri, 23 Mar 2018 16:46:54 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Ioana Ciornei <ioana.ciornei@nxp.com>
Cc:     laurentiu.tudor@nxp.com, linux-kernel@vger.kernel.org,
        stuyoder@gmail.com, ruxandra.radulescu@nxp.com, arnd@arndb.de,
        razvan.stefanescu@nxp.com, Roy.Pledge@nxp.com
Subject: Re: [PATCH v3 2/4] bus: fsl-mc: add restool userspace support
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On Fri, Mar 23, 2018 at 10:38:56AM -0500, Ioana Ciornei wrote:
> +#include "fsl-mc-private.h"
> +
> +#define FSL_MC_BUS_MAX_MINORS	1

As you only need/want one character device here, why not just use the
misc device api?  It's much simpler, and handles all of the housekeeping
for you correctly.  It also means I don't have to audit all of your
chardev code to verify it is correct :)

And it will save you lines-of-code, always a good thing.

thanks,

greg k-h