linux-kernel - Re: [PATCH 36/38] MIPS: remove invalid check

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Message-ID: <20150922154350.GA16339@linux-mips.org>
Date:	Tue, 22 Sep 2015 17:43:51 +0200
From:	Ralf Baechle <ralf@...ux-mips.org>
To:	Andrzej Hajda <a.hajda@...sung.com>
Cc:	linux-kernel@...r.kernel.org,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Markos Chandras <markos.chandras@...tec.com>,
	Chris Dearman <chris.dearman@...tec.com>,
	linux-mips@...ux-mips.org
Subject: Re: [PATCH 36/38] MIPS: remove invalid check

On Mon, Sep 21, 2015 at 03:34:08PM +0200, Andrzej Hajda wrote:

> Unsigned values cannot be lesser than zero.
> 
> The problem has been detected using proposed semantic patch
> scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].
> 
> [1]: http://permalink.gmane.org/gmane.linux.kernel/2038576

Chris Dearman's original commit 9318c51acd9689505850152cc98277a6d6f2d752
([MIPS] MIPS32/MIPS64 secondary cache management) introduced these less
than zero checks in 2.6.18.  They're fortunately entirely harmless.

Patch queued for 4.4.  Thanks!

  Ralf
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