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-rw-r--r--nuttx/arch/arm/src/common/up_internal.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/common/up_internal.h b/nuttx/arch/arm/src/common/up_internal.h
index 862ceb82c..a12fd1001 100644
--- a/nuttx/arch/arm/src/common/up_internal.h
+++ b/nuttx/arch/arm/src/common/up_internal.h
@@ -200,6 +200,7 @@ extern void up_netinitialize(void);
extern void up_usbinitialize(void);
extern void up_usbuninitialize(void);
#else
+# define up_usbinitialize()
# define up_netinitialize()
#endif