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Diffstat (limited to 'nuttx/arch/arm/src/common/up_internal.h')
-rw-r--r--nuttx/arch/arm/src/common/up_internal.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/common/up_internal.h b/nuttx/arch/arm/src/common/up_internal.h
index 2d789a802..a32c5324d 100644
--- a/nuttx/arch/arm/src/common/up_internal.h
+++ b/nuttx/arch/arm/src/common/up_internal.h
@@ -129,8 +129,13 @@ extern void up_vectorfiq(void);
/* Defined in up_serial.c */
+#if CONFIG_NFILE_DESCRIPTORS > 0
extern void up_earlyserialinit(void);
extern void up_serialinit(void);
+#else
+# define up_earlyserialinit()
+# define up_serialinit()
+#endif
/* Defined in up_watchdog.c */