[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: Kyle McMartin <kyle@parisc-linux.org>
diff --git a/include/asm-parisc/io.h b/include/asm-parisc/io.h
index 29da3119..244f6b8 100644
--- a/include/asm-parisc/io.h
+++ b/include/asm-parisc/io.h
@@ -126,24 +126,17 @@
extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
+/* Most machines react poorly to I/O-space being cacheable... Instead let's
+ * define ioremap() in terms of ioremap_nocache().
+ */
extern inline void __iomem * ioremap(unsigned long offset, unsigned long size)
{
- return __ioremap(offset, size, 0);
+ return __ioremap(offset, size, _PAGE_NO_CACHE);
}
-
-/*
- * 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:
- */
-extern inline void * ioremap_nocache(unsigned long offset, unsigned long size)
-{
- return __ioremap(offset, size, _PAGE_NO_CACHE /* _PAGE_PCD */);
-}
+#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));