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Diffstat (limited to 'arch/powerpc/sysdev/dart_iommu.c')
-rw-r--r--arch/powerpc/sysdev/dart_iommu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/dart_iommu.c b/arch/powerpc/sysdev/dart_iommu.c
index 8e9e06a7ca5..4f2680f431b 100644
--- a/arch/powerpc/sysdev/dart_iommu.c
+++ b/arch/powerpc/sysdev/dart_iommu.c
@@ -239,7 +239,7 @@ static int __init dart_init(struct device_node *dart_node)
DARTMAP_RPNMASK);
/* Map in DART registers */
- dart = ioremap(r.start, r.end - r.start + 1);
+ dart = ioremap(r.start, resource_size(&r));
if (dart == NULL)
panic("DART: Cannot map registers!");