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Diffstat (limited to 'include/uapi/linux/serial.h')
-rw-r--r--include/uapi/linux/serial.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/serial.h b/include/uapi/linux/serial.h
index de9b4733607e..e6f61538fc28 100644
--- a/include/uapi/linux/serial.h
+++ b/include/uapi/linux/serial.h
@@ -72,6 +72,7 @@ struct serial_struct {
#define SERIAL_IO_TSI 5
#define SERIAL_IO_MEM32BE 6
#define SERIAL_IO_MEM16 7
+#define SERIAL_IO_BUS 8
#define UART_CLEAR_FIFO 0x01
#define UART_USE_FIFO 0x02