Re: Purpose of do{}while(0) in #define spin_lock_init(x) do {(x)->lock = 0; } while(0)

[Bernd Petrovitsch]

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
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