linux-kernel - Re: [PATCH v3 1/3] uio: add ioctl support

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Date:	Mon, 5 Oct 2015 04:03:52 +0100
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Vlad Zolotarov <vladz@...udius-systems.com>
Cc:	linux-kernel@...r.kernel.org, mst@...hat.com, hjk@...sjkoch.de,
	corbet@....net, bruce.richardson@...el.com,
	avi@...udius-systems.com, gleb@...udius-systems.com,
	stephen@...workplumber.org, alexander.duyck@...il.com
Subject: Re: [PATCH v3 1/3] uio: add ioctl support

On Sun, Oct 04, 2015 at 11:43:16PM +0300, Vlad Zolotarov wrote:
> Signed-off-by: Vlad Zolotarov <vladz@...udius-systems.com>
> ---
>  drivers/uio/uio.c          | 15 +++++++++++++++
>  include/linux/uio_driver.h |  3 +++
>  2 files changed, 18 insertions(+)

You add an ioctl yet fail to justify _why_ you need/want that ioctl, and
you don't document it at all?  Come on, you know better than that, no
one can take a patch that has no changelog comments at all like this :(

Also, I _REALLY_ don't want to add any ioctls to the UIO interface, so
you had better have a really compelling argument as to why this is the
_ONLY_ way you can solve this unknown problem by using such a horrid
thing...

thanks,

greg k-h
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