x86: remove duplicated extern force_iommu
Both iommu.h and dma-mapping.h have extern force_iommu. The latter
doesn't need to do.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 5607532..f43420b 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -15,7 +15,6 @@
extern int iommu_merge;
extern struct device x86_dma_fallback_dev;
extern int panic_on_overflow;
-extern int force_iommu;
struct dma_mapping_ops {
int (*mapping_error)(struct device *dev,