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SubjectRe: Big Fix for 2.2.1
Date
> (1) The identity phys_to_virt(virt_to_phys(x)) == x is violated.
>
> (2) The readb/writeb/readw/writew/readl/writel macros are completely incorrect
> since they are supposed to be applied to memory mapped I/O regions
> allocated with ioremap, but ioremap returns a kernel virtual address
> and hence no further mapping is appropriate.

This change breaks half the drivers in the kernel. Everything assumes they
take physical addresses.



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