linux-kernel - Re: [PATCH 1/1] Add mkopci driver

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Date:	Sat, 21 Mar 2015 18:32:16 +0100
From:	Richard Weinberger <richard@....at>
To:	Sergej Bauer <sergej.bauer@...il.com>,
	Arnd Bergmann <arnd@...db.de>
CC:	Paul Bolle <pebolle@...cali.nl>, linux-kernel@...r.kernel.org,
	gregkh@...uxfoundation.org
Subject: Re: [PATCH 1/1] Add mkopci driver

Am 21.03.2015 um 18:24 schrieb Sergej Bauer:
> Ok, I realized uselessness of merging this driver...

Please don't give up that fast!
See: http://airlied.livejournal.com/#item80112

> And you brought me to a standstill:
>> passthrough. In either case, both the ioctl interface and the procfs interface have no future
> But what will be after ioctl?

We will not drop the ioctl() system call. But having a character device with random
ioctl()s is not really a good driver design.
Today we have much more elegant ways to interact between kernel and userspace than ioctl().
For example sysfs or netlink.

Thanks,
//richard
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