linux-kernel - Re: [PATCH 1/7] drivers/ide/ide-cs.c: adjust suspicious bit operation

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Message-Id: <20120612.155218.1712141231523216893.davem@davemloft.net>
Date:	Tue, 12 Jun 2012 15:52:18 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	Julia.Lawall@...6.fr
Cc:	kernel-janitors@...r.kernel.org, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org, joe@...ches.com
Subject: Re: [PATCH 1/7] drivers/ide/ide-cs.c: adjust suspicious bit
 operation

From: Julia Lawall <Julia.Lawall@...6.fr>
Date: Tue, 12 Jun 2012 10:17:25 -0400 (EDT)

> From: Julia Lawall <Julia.Lawall@...6.fr>
> 
> IO_DATA_PATH_WIDTH_8 is 0, so a bit-and with it is always false.  The
> value IO_DATA_PATH_WIDTH covers the bits of the IO_DATA_PATH constants, so
> first pick those bits and then make the test using !=.
> 
> This problem was found using Coccinelle (http://coccinelle.lip6.fr/).
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

Applied, thanks.
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