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-rw-r--r--arch/powerpc/include/asm/vio.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/vio.h b/arch/powerpc/include/asm/vio.h
index cc9b787627ad..6faf2a931755 100644
--- a/arch/powerpc/include/asm/vio.h
+++ b/arch/powerpc/include/asm/vio.h
@@ -39,7 +39,7 @@
*/
#define VIO_CMO_MIN_ENT 1562624
-extern struct bus_type vio_bus_type;
+extern const struct bus_type vio_bus_type;
struct iommu_table;