linux-kernel - Re: [PATCH 1/8] arm/mach-tegra: fix unsigned calcs

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Message-ID: <AANLkTinFKH4Ed3UW3kMKdT5RJwmmE5n5k7nO01mB9xpO@mail.gmail.com>
Date:	Tue, 20 Jul 2010 00:14:08 -0700
From:	Colin Cross <ccross@...roid.com>
To:	Kulikov Vasiliy <segooon@...il.com>
Cc:	kernel-janitors@...r.kernel.org,
	Erik Gilling <konkers@...roid.com>,
	Olof Johansson <olof@...om.net>,
	Russell King <linux@....linux.org.uk>,
	linux-tegra@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/8] arm/mach-tegra: fix unsigned calcs

On Thu, Jul 15, 2010 at 11:43 AM, Kulikov Vasiliy <segooon@...il.com> wrote:
> divider_u71 is unsigned, so this check is buggy:
> if (divider_u71 - 2 > 255 || divider_u71 - 2 < 0)
>
> If divider_u71 is 0 or 1 both checks are lying.
> So, it does not produce a buggy answer, but it is confusing.

Hi Kulikov,
Thanks for the patch.  This problem has been fixed in another patch in
the linux-tegra tree, I'll post it for review and update the
linux-next tree soon.

Colin Cross
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