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From: Duncan Sands <baldrick@wanadoo.fr>
To: Heiko.Rabe@InVision.de
Subject: Re: inconsistent usage of
Date: Tue, 22 Apr 2003 10:40:45 +0200
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> void foo()
> {
>      unsigned long  local_flags;
>      spin_lock_irqsave (&qtlock, local_flags);
>      spin_lock_irqsave (&qtlock, local_flags);
> }
>
> Calling the function foo() works proper in none SMP kernels. I assume, the
> spinlocks internaly will be initialized as
> recursive semaphore as default. So it is possible to aquire it more than
> once by the same thread.

No.  If you acquire it twice then you die.  The above code is wrong.
Where did you find it?

All the best,

Duncan.