spin_lock doesn't work?!?

[melinda develey]

  >You should still put the spin_lock calls into your code because >you
>never know if someone else will compile it and for another >target. If
>someone would, for example, compile the same code for a SMP >machine then
>the spin_lock will actually lock.

  I used the spinlock both in an interrupt handler to protect a group of variables (because in an interrupt I can't use a semaphore) and the same spinlock in a ioctl handler where the same group of variables is accessed. Is this wrong? I have a 2.6.19.2 linux kernel.
   
  Thank you,
  Melinda.
   
   
   

       
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