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Commit 1b52d7c2 authored by Kyle McMartin's avatar Kyle McMartin Committed by Kyle McMartin
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[PARISC] Make ioremap default to _nocache 



Since it is way more work to change most drivers to comply with parisc, take
the easy way out and make ioremap _NO_CACHE by default. This is in line with
what powerpc does.

Signed-off-by: default avatarKyle McMartin <kyle@parisc-linux.org>
parent 6ca773cf

include/asm-parisc/io.h

+5 −12
Original line number Diff line number Diff line
@@ -126,24 +126,17 @@ static inline void gsc_writeq(unsigned long long val, unsigned long addr) 


extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);



extern inline void __iomem * ioremap(unsigned long offset, unsigned long size)

{

	return __ioremap(offset, size, 0);

}



/*

 * This one maps high address device memory and turns off caching for that area.

 * it's useful if some control registers are in such an area and write combining

 * or read caching is not desirable:

/* Most machines react poorly to I/O-space being cacheable... Instead let's

 * define ioremap() in terms of ioremap_nocache().

 */

extern inline void * ioremap_nocache(unsigned long offset, unsigned long size)

extern inline void __iomem * ioremap(unsigned long offset, unsigned long size)

{

        return __ioremap(offset, size, _PAGE_NO_CACHE /* _PAGE_PCD */);

	return __ioremap(offset, size, _PAGE_NO_CACHE);

}

#define ioremap_nocache(off, sz)	ioremap((off), (sz))



extern void iounmap(void __iomem *addr);





static inline unsigned char __raw_readb(const volatile void __iomem *addr)

{

	return (*(volatile unsigned char __force *) (addr));