[PATCH 6/13] devres: implement managed iomap interface

Tejun Heo htejun at gmail.com
Wed Apr 9 00:48:43 EST 2008


Sergei Shtylyov wrote:
>    A very late comment but nevertheless... :-)

Better late than never.

>    Those functions are going to break on 32-bit platforms with extended 
> physical address (well, that's starting with Pentiums which had 36-bit 
> PAE :-) AND devices mapped beyond 4 GB (e.g. PowerPC 44x).  You should 
> have used resource_size_t for the 'offset' parameter. As this most 
> probably means that libata is broken on such platforms, I'm going to 
> submit a patch...

Yeah, right please go ahead.  But I wonder whether any BIOS was actually 
crazy enough to map mmio region above 4G on 32bit machine.

-- 
tejun



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