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authorRob Herring <rob.herring@calxeda.com>2012-08-21 14:26:24 +0400
committerMarek Szyprowski <m.szyprowski@samsung.com>2012-10-02 10:58:07 +0400
commit48aa820f1e3824e46dde6251db98e5961abf605d (patch)
tree20cac9fd267b7e8bc43e47165c631bb6cadef15b /arch/arm/include
parent0fa478df444f5837336d7e2fd0b41643c8d704c2 (diff)
downloadlinux-48aa820f1e3824e46dde6251db98e5961abf605d.tar.xz
ARM: kill off arch_is_coherent
With ixp2xxx removed, there are no platforms that define arch_is_coherent, so the last occurrences of arch_is_coherent can be removed. Any new platform with coherent i/o should use coherent dma mapping functions. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Diffstat (limited to 'arch/arm/include')
-rw-r--r--arch/arm/include/asm/barrier.h7
-rw-r--r--arch/arm/include/asm/memory.h8
2 files changed, 3 insertions, 12 deletions
diff --git a/arch/arm/include/asm/barrier.h b/arch/arm/include/asm/barrier.h
index 05112380dc53..8dcd9c702d90 100644
--- a/arch/arm/include/asm/barrier.h
+++ b/arch/arm/include/asm/barrier.h
@@ -44,10 +44,9 @@
#define rmb() dsb()
#define wmb() mb()
#else
-#include <asm/memory.h>
-#define mb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
-#define rmb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
-#define wmb() do { if (arch_is_coherent()) dmb(); else barrier(); } while (0)
+#define mb() barrier()
+#define rmb() barrier()
+#define wmb() barrier()
#endif
#ifndef CONFIG_SMP
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index 5f6ddcc56452..73cf03aa981e 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -275,14 +275,6 @@ static inline __deprecated void *bus_to_virt(unsigned long x)
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory)
-/*
- * Optional coherency support. Currently used only by selected
- * Intel XSC3-based systems.
- */
-#ifndef arch_is_coherent
-#define arch_is_coherent() 0
-#endif
-
#endif
#include <asm-generic/memory_model.h>