1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h
index 2868a1da254d..f9719d167c8d 100644
--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -37,6 +37,10 @@ struct uart_8250_port {
         unsigned char           lsr_saved_flags;
 #define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA
         unsigned char           msr_saved_flags;
+
+        /* 8250 specific callbacks */
+        int                     (*dl_read)(struct uart_8250_port *);
+        void                    (*dl_write)(struct uart_8250_port *, int);
 };
 
 struct old_serial_port {
@@ -96,6 +100,18 @@ static inline void serial_out(struct uart_8250_port *up, int offset, int value)
         up->port.serial_out(&up->port, offset, value);
 }
 
+void serial8250_clear_and_reinit_fifos(struct uart_8250_port *p);
+
+static inline int serial_dl_read(struct uart_8250_port *up)
+{
+        return up->dl_read(up);
+}
+
+static inline void serial_dl_write(struct uart_8250_port *up, int value)
+{
+        up->dl_write(up, value);
+}
+
 #if defined(__alpha__) && !defined(CONFIG_PCI)
 /*
  * Digital did something really horribly wrong with the OUT1 and OUT2