ioremap() twice on same memory mapped area?

ioremap() twice on same memory mapped area?

[Parav Pandit]

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Hi,
   
  I have memory mapped device and two device drivers wants to use the same area for different external device.
  To access the same space there is a global spin lock to avoid any race condition.
   
  Question is:
  Can both the driver call the ioremap() on the same space and get the different virtual address? or ioremap() should fail?
   
  Regards,
  Parav Pandit
   

 		
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Re: ioremap() twice on same memory mapped area?

[Dan Malek]

On Aug 19, 2006, at 2:52 AM, Parav Pandit wrote:

> Question is:
> Can both the driver call the ioremap() on the same space and get  
> the different virtual address?

Yes, and depending upon the implementation and optimizations,
they may also get the same virtual address.  It will work as you
intend.


	-- Dan