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, 6 deletions

diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index ee5ff41027a3..af44a8fb3480 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -215,12 +215,6 @@ static inline unsigned long __phys_to_virt(unsigned long x)
 #define ISA_DMA_THRESHOLD       (PHYS_OFFSET + ARM_DMA_ZONE_SIZE - 1)
 #endif
 
-#ifndef arch_adjust_zones
-#define arch_adjust_zones(size,holes) do { } while (0)
-#elif !defined(CONFIG_ZONE_DMA)
-#error "custom arch_adjust_zones() requires CONFIG_ZONE_DMA"
-#endif
-
 /*
  * PFNs are used to describe any physical page; this means
  * PFN 0 == physical address 0.