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authorRussell King <rmk+kernel@arm.linux.org.uk>2009-10-25 22:42:38 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-10-25 22:44:30 +0000
commitce63e6bd0ac7eca242562ee07f518bacc8eaa5ce (patch)
tree6ac07bf89cba22f558f5e04c6298f02c9d2385ba /arch/arm/mach-integrator/include
parentab72b00734ae4d0b5ff273a0f6c7abeaa3713c76 (diff)
downloadop-kernel-dev-ce63e6bd0ac7eca242562ee07f518bacc8eaa5ce.zip
op-kernel-dev-ce63e6bd0ac7eca242562ee07f518bacc8eaa5ce.tar.gz
ARM: integrator: allow Integrator to be built with highmem
This fixes Integrator builds with highmem enabled; we need to translate from 'struct page' to a DMA address, and this is not possible without __pfn_to_bus(). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-integrator/include')
-rw-r--r--arch/arm/mach-integrator/include/mach/memory.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/mach-integrator/include/mach/memory.h b/arch/arm/mach-integrator/include/mach/memory.h
index 2b2e7a1..4891828 100644
--- a/arch/arm/mach-integrator/include/mach/memory.h
+++ b/arch/arm/mach-integrator/include/mach/memory.h
@@ -28,5 +28,6 @@
#define BUS_OFFSET UL(0x80000000)
#define __virt_to_bus(x) ((x) - PAGE_OFFSET + BUS_OFFSET)
#define __bus_to_virt(x) ((x) - BUS_OFFSET + PAGE_OFFSET)
+#define __pfn_to_bus(x) (((x) << PAGE_SHIFT) + BUS_OFFSET)
#endif
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