[MIPS] page.h: remove __pa() usages.

__pa() was used by virt_to_page() and virt_addr_valid(). These
latter are used when kernel is initialised so __pa() is not
appropriate, we use virt_to_phys() instead.

Futhermore __pa() is going to take care of CKSEG0/XKPHYS
address mix for 64 bit kernels. This makes __pa() more complex
than virt_to_phys() and this extra work is not needed by
virt_to_page() and virt_addr_valid().

Eventually it consolidates virt_to_phys() prototype by making
its argument 'const'. this avoids some warnings that was due
to some virt_to_page() usages which pass const pointer.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/include/asm-mips/page.h b/include/asm-mips/page.h
index 85b258ee7090..edb33a14ae9e 100644
--- a/include/asm-mips/page.h
+++ b/include/asm-mips/page.h
@@ -34,7 +34,9 @@
 
 #ifndef __ASSEMBLY__
 
+#include <linux/pfn.h>
 #include <asm/cpu-features.h>
+#include <asm/io.h>
 
 extern void clear_page(void * page);
 extern void copy_page(void * to, void * from);
@@ -160,8 +162,8 @@ typedef struct { unsigned long pgprot; } pgprot_t;
 
 #endif
 
-#define virt_to_page(kaddr)     pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
-#define virt_addr_valid(kaddr)  pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+#define virt_to_page(kaddr)     pfn_to_page(PFN_DOWN(virt_to_phys(kaddr)))
+#define virt_addr_valid(kaddr)  pfn_valid(PFN_DOWN(virt_to_phys(kaddr)))
 
 #define VM_DATA_DEFAULT_FLAGS   (VM_READ | VM_WRITE | VM_EXEC | \
                                  VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)