serial: 8250: Move ns16550a_goto_hispeed() to local header

Prepare for 8250_core.c file split; move shared inline function
to local header file.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h
index 656ecc60b5b262df9118512752e654bf5f048f0e..23dc9f9b98398281befa13c6308d61690336d801 100644 (file)
--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -21,7 +21,6 @@ struct uart_8250_dma {
 
        /* Filter function */
        dma_filter_fn           fn;
-
        /* Parameter to the filter function */
        void                    *rx_param;
        void                    *tx_param;
@@ -198,3 +197,20 @@ static inline int serial8250_request_dma(struct uart_8250_port *p)
 }
 static inline void serial8250_release_dma(struct uart_8250_port *p) { }
 #endif
+
+static inline int ns16550a_goto_highspeed(struct uart_8250_port *up)
+{
+       unsigned char status;
+
+       status = serial_in(up, 0x04); /* EXCR2 */
+#define PRESL(x) ((x) & 0x30)
+       if (PRESL(status) == 0x10) {
+               /* already in high speed mode */
+               return 0;
+       } else {
+               status &= ~0xB0; /* Disable LOCK, mask out PRESL[01] */
+               status |= 0x10;  /* 1.625 divisor for baud_base --> 921600 */
+               serial_out(up, 0x04, status);
+       }
+       return 1;
+}

diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index 97bcfeab8d6eefa9a870532d4553610e88b8c0d2..0cf9b85901dc1a85a2fdf48d240d9e0de0f44517 100644 (file)
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -903,23 +903,6 @@ static int broken_efr(struct uart_8250_port *up)
        return 0;
 }
 
-static inline int ns16550a_goto_highspeed(struct uart_8250_port *up)
-{
-       unsigned char status;
-
-       status = serial_in(up, 0x04); /* EXCR2 */
-#define PRESL(x) ((x) & 0x30)
-       if (PRESL(status) == 0x10) {
-               /* already in high speed mode */
-               return 0;
-       } else {
-               status &= ~0xB0; /* Disable LOCK, mask out PRESL[01] */
-               status |= 0x10;  /* 1.625 divisor for baud_base --> 921600 */
-               serial_out(up, 0x04, status);
-       }
-       return 1;
-}
-
 /*
  * We know that the chip has FIFOs.  Does it have an EFR?  The
  * EFR is located in the same register position as the IIR and