Re: Being more anal about iospace accesses..

[Jeff Garzik]

On Wed, Sep 15, 2004 at 06:54:50PM +0200, Jörn Engel wrote:
> On Wed, 15 September 2004 09:30:42 -0700, Linus Torvalds wrote:
> > 
> > For example, if you don't know (or, more importantly - don't care) what 
> > kind of IO interface you use, you can now do something like
> > 
> > 	void __iomem * map = pci_iomap(dev, bar, maxbytes);
> > 	...
> > 	status = ioread32(map + DRIVER_STATUS_OFFSET);
> 
> C now supports pointer arithmetic with void*?  I hope the width of a
> void is not architecture dependent, that would introduce more subtle
> bugs.

gcc extension, which has been used in the kernel for ages.

	Jeff



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