ARM: use ARM_DMA_ZONE_SIZE to adjust the zone sizes

Rather than each platform providing its own function to adjust the
zone sizes, use the new ARM_DMA_ZONE_SIZE definition to perform this
adjustment.  This ensures that the actual DMA zone size and the
ISA_DMA_THRESHOLD/MAX_DMA_ADDRESS definitions are consistent with
each other, and moves this complexity out of the platform code.

Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 0 insertions, 15 deletions

diff --git a/arch/arm/mach-davinci/include/mach/memory.h b/arch/arm/mach-davinci/include/mach/memory.h
index 8d27246cca4d..491249ef209c 100644
--- a/arch/arm/mach-davinci/include/mach/memory.h
+++ b/arch/arm/mach-davinci/include/mach/memory.h
@@ -41,26 +41,11 @@
  */
 #define CONSISTENT_DMA_SIZE (14<<20)
 
-#ifndef __ASSEMBLY__
 /*
  * Restrict DMA-able region to workaround silicon bug.  The bug
  * restricts buffers available for DMA to video hardware to be
  * below 128M
  */
-static inline void
-__arch_adjust_zones(unsigned long *size, unsigned long *holes)
-{
-        unsigned int sz = (128<<20) >> PAGE_SHIFT;
-
-        size[1] = size[0] - sz;
-        size[0] = sz;
-}
-
-#define arch_adjust_zones(zone_size, holes) \
-        if ((meminfo.bank[0].size >> 20) > 128) __arch_adjust_zones(zone_size, holes)
-
 #define ARM_DMA_ZONE_SIZE       SZ_128M
 
-#endif
-
 #endif /* __ASM_ARCH_MEMORY_H */