Re: [RFC 1/4] media: Sanitise the reserved fields of the G_TOPOLOGY IOCTL arguments

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Hi Mauro,

On Mon, Feb 22, 2016 at 07:23:21AM -0300, Mauro Carvalho Chehab wrote:
> Em Mon, 22 Feb 2016 07:00:47 -0300
> Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx> escreveu:
> 
> > Em Sun, 21 Feb 2016 23:36:12 +0200
> > Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx> escreveu:
> > 
> > > From: Sakari Ailus <sakari.ailus@xxxxxx>
> > > 
> > > Align them up to a power of two.  
> > 
> > Looks OK to me, but I would comment that the structs are aligned to
> > 2^n for those structs.
> 
> Hmm... on a second tought, I don't think this patch makes any sense.
> As those structs will be part of an array at media_v2_topology,
> this won't be aligned to a power of two, as we don't require that
> the number of links, entities, etc.. to be a aligned.

Well... that's a valid point indeed. Still I think the reserved fields do
need some changes, at least aligning the size to the common ABI alignment
(e.g. 8 bytes) rather than relying on the compiler to do it.

-- 
Sakari Ailus
e-mail: sakari.ailus@xxxxxx	XMPP: sailus@xxxxxxxxxxxxxx
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