linux-kernel - Re: [PATCH] staging/android: change IOCTLs opcode after ABI change

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Date:	Tue, 8 Mar 2016 18:36:45 -0800
From:	Greg Hackmann <ghackmann@...gle.com>
To:	Gustavo Padovan <gustavo@...ovan.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
	dri-devel@...ts.freedesktop.org,
	Daniel Stone <daniels@...labora.com>,
	Arve Hjønnevåg <arve@...roid.com>,
	Riley Andrews <riandrews@...roid.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Rob Clark <robdclark@...il.com>,
	John Harrison <John.C.Harrison@...el.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Gustavo Padovan <gustavo.padovan@...labora.co.uk>
Subject: Re: [PATCH] staging/android: change IOCTLs opcode after ABI change

On 03/03/2016 02:42 PM, Gustavo Padovan wrote:
> From: Gustavo Padovan <gustavo.padovan@...labora.co.uk>
>
> Burn the old opcode to avoid any potential old userspace running the old
> API to get weird errors. Changing the opcodes will make them fail right
> away.
>
> This is just a precaution, there no upstream users of these interfaces
> yet and the only user is Android, but we don't expect anyone trying to
> run android userspace and all it dependencies on top of upstream kernels.
>
> Moreover Android should be converted to use upstream sync_files.
>
> Suggested-by: Rob Clark <robdclark@...il.com>
> Signed-off-by: Gustavo Padovan <gustavo.padovan@...labora.co.uk>

Acked-by: Greg Hackmann <ghackmann@...gle.com>