linux-kernel - Re: [PATCH] Fix __ucmpdi2 in v4l2_norm_to

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Message-Id: <20070104151837.1a878a20.akpm@osdl.org>
Date:	Thu, 4 Jan 2007 15:18:37 -0800
From:	Andrew Morton <akpm@...l.org>
To:	Mauro Carvalho Chehab <mchehab@...radead.org>
Cc:	Stelian Pop <stelian@...ies.net>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...l.org>,
	v4l-dvb-maintainer@...uxtv.org
Subject: Re: [PATCH] Fix __ucmpdi2 in v4l2_norm_to_name()

On Thu, 04 Jan 2007 20:59:08 -0200
Mauro Carvalho Chehab <mchehab@...radead.org> wrote:

> > The largest value we use here is 0x02000000.  Perhaps v4l2_std_id shouldn't
> > be 64-bit?
> Too late to change it to 32 bits. It is at V4L2 userspace API since
> kernel 2.6.0.

You could perhaps make it 32-bit internally, and still 64-bit on the
kernel<->userspace boundary.   64-bit quantities are expensive..

> We can, however use this approach as a workaround, with
> the proper documentation. I'll handle it after I return from vacations
> next week.

Thanks.
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