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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>
This commit is contained in:
Russell King 2009-10-25 22:42:38 +00:00
parent ab72b00734
commit ce63e6bd0a
1 changed files with 1 additions and 0 deletions
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1
arch/arm/mach-integrator/include/mach/memory.h
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@ -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