Messages in this thread | | | Subject | Re: Purpose of do{}while(0) in #define spin_lock_init(x) do { (x)->lock = 0; } while(0) | From | Bernd Petrovitsch <> | Date | Wed, 05 Jan 2005 15:15:14 +0100 |
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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/ mobil: +43 664 4416156 fax: +43 1 7890849-55 Embedded Linux Development and Services
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