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-rw-r--r--drivers/staging/speakup/serialio.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/staging/speakup/serialio.c b/drivers/staging/speakup/serialio.c
index 135428856d47..4e18fb405344 100644
--- a/drivers/staging/speakup/serialio.c
+++ b/drivers/staging/speakup/serialio.c
@@ -6,6 +6,10 @@
#include "spk_priv.h"
#include "serialio.h"
+#ifndef SERIAL_PORT_DFNS
+#define SERIAL_PORT_DFNS
+#endif
+
static void start_serial_interrupt(int irq);
static const struct old_serial_port rs_table[] = {