[ARM] dma-mapping: improve type-safeness of DMA translations

OMAP at least gets the return type(s) for the DMA translation functions
wrong, which can lead to subtle errors.  Avoid this by moving the DMA
translation functions to asm/dma-mapping.h, and converting them to
inline functions.

Fix the OMAP DMA translation macros to use the correct argument and
result types.

Also, remove the unnecessary casts in dmabounce.c.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 0 insertions, 14 deletions

diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index 7bcd69a9a88c..bf7c737c9226 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -314,20 +314,6 @@ static inline __deprecated void *bus_to_virt(unsigned long x)
 #define page_to_phys(page)      (page_to_pfn(page) << PAGE_SHIFT)
 
 /*
- * Optional device DMA address remapping. Do _not_ use directly!
- * We should really eliminate virt_to_bus() here - it's deprecated.
- */
-#ifndef __arch_page_to_dma
-#define page_to_dma(dev, page)          ((dma_addr_t)__virt_to_bus((unsigned long)page_address(page)))
-#define dma_to_virt(dev, addr)          ((void *)__bus_to_virt(addr))
-#define virt_to_dma(dev, addr)          ((dma_addr_t)__virt_to_bus((unsigned long)(addr)))
-#else
-#define page_to_dma(dev, page)          (__arch_page_to_dma(dev, page))
-#define dma_to_virt(dev, addr)          (__arch_dma_to_virt(dev, addr))
-#define virt_to_dma(dev, addr)          (__arch_virt_to_dma(dev, addr))
-#endif
-
-/*
  * Optional coherency support.  Currently used only by selected
  * Intel XSC3-based systems.
  */