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-rw-r--r--arch/powerpc/include/asm/macio.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/macio.h b/arch/powerpc/include/asm/macio.h
index 3a07c62973aa..ab9608e63e40 100644
--- a/arch/powerpc/include/asm/macio.h
+++ b/arch/powerpc/include/asm/macio.h
@@ -6,7 +6,7 @@
#include <linux/of.h>
#include <linux/platform_device.h>
-extern struct bus_type macio_bus_type;
+extern const struct bus_type macio_bus_type;
/* MacIO device driver is defined later */
struct macio_driver;