From: Olof Johansson <olof@lixom.net>
To: Julia Lawall <julia@diku.dk>
Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-i2c@vger.kernel.org,
"Ben Dooks (embedded platforms)" <ben-linux@fluff.org>,
"Jean Delvare (PC drivers, core)" <khali@linux-fr.org>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 4/8] drivers/i2c/busses/i2c-pasemi.c: Fix unsigned
Date: Mon, 06 Sep 2010 16:30:44 +0000 [thread overview]
Message-ID: <20100906163044.GA14188@lixom.net> (raw)
In-Reply-To: <1283713226-8429-5-git-send-email-julia@diku.dk>
On Sun, Sep 05, 2010 at 09:00:22PM +0200, Julia Lawall wrote:
> The function has an unsigned return type, but returns a negative constant
> to indicate an error condition. The result of calling the function is
> always stored in a variable of type (signed) int, and thus unsigned can be
> dropped from the return type.
>
> A sematic match that finds this problem is as follows:
> (http://coccinelle.lip6.fr/)
>
> // <smpl>
> @exists@
> identifier f;
> constant C;
> @@
>
> unsigned f(...)
> { <+...
> * return -C;
> ...+> }
> // </smpl>
>
> Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Olof Johansson <olof@lixom.net>
next prev parent reply other threads:[~2010-09-06 16:30 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-05 18:59 [PATCH 0/8] Fix unsigned return type Julia Lawall
2010-09-05 19:00 ` [PATCH 1/8] drivers/video/matrox/matroxfb_maven.c: " Julia Lawall
2010-09-05 19:00 ` [PATCH 2/8] arch/x86/kernel/cpu/cpufreq: " Julia Lawall
2010-09-05 19:00 ` [PATCH 3/8] net/9p/trans_fd.c: " Julia Lawall
2010-09-07 1:39 ` David Miller
2010-09-05 19:00 ` [PATCH 4/8] drivers/i2c/busses/i2c-pasemi.c: " Julia Lawall
2010-09-06 16:30 ` Olof Johansson [this message]
2010-09-05 19:00 ` [PATCH 5/8] drivers/atm/firestream.c: " Julia Lawall
2010-09-07 1:40 ` David Miller
2010-09-05 19:00 ` [PATCH 6/8] drivers/staging/comedi/drivers: " Julia Lawall
2010-09-05 19:00 ` [PATCH 8/8] drivers/net/wireless/iwlwifi/iwl-agn.c: Fix return value from an unsigned function Julia Lawall
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