ARM: provide phys_to_page() to complement page_to_phys()

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-By: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index cefedf0..e0f8f4a 100644 (file)
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -134,6 +134,12 @@
 #define        __phys_to_pfn(paddr)    ((paddr) >> PAGE_SHIFT)
 #define        __pfn_to_phys(pfn)      ((pfn) << PAGE_SHIFT)
 
+/*
+ * Convert a page to/from a physical address
+ */
+#define page_to_phys(page)     (__pfn_to_phys(page_to_pfn(page)))
+#define phys_to_page(phys)     (pfn_to_page(__phys_to_pfn(phys)))
+
 #ifndef __ASSEMBLY__
 
 /*
@@ -293,11 +299,6 @@ static inline __deprecated void *bus_to_virt(unsigned long x)
 #endif /* !CONFIG_DISCONTIGMEM */
 
 /*
- * For BIO.  "will die".  Kill me when bio_to_phys() and bvec_to_phys() die.
- */
-#define page_to_phys(page)     (page_to_pfn(page) << PAGE_SHIFT)
-
-/*
  * Optional coherency support.  Currently used only by selected
  * Intel XSC3-based systems.
  */