From: Bernd Petrovitsch <bernd@firmix.at>
To: "Kotian, Deepak" <Deepak.Kotian@patni.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Purpose of do{}while(0) in #define spin_lock_init(x) do { (x)->lock = 0; } while(0)
Date: Wed, 05 Jan 2005 15:15:14 +0100 [thread overview]
Message-ID: <1104934513.28504.18.camel@tara.firmix.at> (raw)
In-Reply-To: <374639AB1012AA4C840022842AA95BC203E0E7E3@ruby.patni.com>
On Wed, 2005-01-05 at 19:31 +0530, Kotian, Deepak wrote:
> Is there any specific reason why do{}while(0) is
> there in this definition
> #define spin_lock_init(x) do { (x)->lock = 0; } while(0)
>
> What could happen if it is replaced by
> #define spin_lock_init(x) { (x)->lock = 0; }
http://kernelnewbies.org/faq/index.php3#dowhile
Bernd
--
Firmix Software GmbH http://www.firmix.at/
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Embedded Linux Development and Services
prev parent reply other threads:[~2005-01-05 14:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-05 14:01 Kotian, Deepak
2005-01-05 14:14 ` Paolo Ornati
2005-01-05 14:15 ` Bernd Petrovitsch [this message]
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