ARM: DMA: Replace page_to_dma()/dma_to_page() with pfn_to_dma()/dma_to_pfn()

Replace the page_to_dma() and dma_to_page() macros with their PFN
equivalents.  This allows us to map parts of memory which do not have
a struct page allocated to them to bus addresses.  This will be used
internally by dma_alloc_coherent()/dma_alloc_writecombine().

Build tested on Versatile, OMAP1, IOP13xx and KS8695.

Tested-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/arm/mach-ks8695/include/mach/memory.h b/arch/arm/mach-ks8695/include/mach/memory.h
index ffa19aae6e05..bace9a681adc 100644
--- a/arch/arm/mach-ks8695/include/mach/memory.h
+++ b/arch/arm/mach-ks8695/include/mach/memory.h
@@ -35,17 +35,17 @@ extern struct bus_type platform_bus_type;
                                         __phys_to_virt(x) : __bus_to_virt(x)); })
 #define __arch_virt_to_dma(dev, x)      ({ is_lbus_device(dev) ? \
                                         (dma_addr_t)__virt_to_phys(x) : (dma_addr_t)__virt_to_bus(x); })
-#define __arch_page_to_dma(dev, x)      \
-        ({ dma_addr_t __dma = page_to_phys(page); \
+#define __arch_pfn_to_dma(dev, pfn)     \
+        ({ dma_addr_t __dma = __pfn_to_phys(pfn); \
            if (!is_lbus_device(dev)) \
                 __dma = __dma - PHYS_OFFSET + KS8695_PCIMEM_PA; \
            __dma; })
 
-#define __arch_dma_to_page(dev, x)      \
+#define __arch_dma_to_pfn(dev, x)       \
         ({ dma_addr_t __dma = x;                                \
            if (!is_lbus_device(dev))                            \
                 __dma += PHYS_OFFSET - KS8695_PCIMEM_PA;        \
-           phys_to_page(__dma);                                 \
+           __phys_to_pfn(__dma);                                \
         })
 
 #endif