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-rw-r--r--include/asm-x86/dma-mapping.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index c671a0aea59b..984935d86bbd 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -10,6 +10,8 @@
#include <asm/io.h>
#include <asm/swiotlb.h>
+extern dma_addr_t bad_dma_address;
+
struct dma_mapping_ops {
int (*mapping_error)(dma_addr_t dma_addr);
void* (*alloc_coherent)(struct device *dev, size_t size,
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