[SERIAL] kernel console should send CRLF not LFCR

Glen Turner reported that writing LFCR rather than the more
traditional CRLF causes issues with some terminals.

Since this aflicts many serial drivers, extract the common code
to a library function (uart_console_write) and arrange for each
driver to supply a "putchar" function.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 9 insertions, 17 deletions

diff --git a/drivers/serial/m32r_sio.c b/drivers/serial/m32r_sio.c
index 242a04104393..876bc5e027bb 100644
--- a/drivers/serial/m32r_sio.c
+++ b/drivers/serial/m32r_sio.c
@@ -1039,6 +1039,14 @@ static inline void wait_for_xmitr(struct uart_sio_port *up)
         }
 }
 
+static void m32r_sio_console_putchar(struct uart_port *port, int ch)
+{
+        struct uart_sio_port *up = (struct uart_sio_port *)port;
+
+        wait_for_xmitr(up);
+        sio_out(up, SIOTXB, ch);
+}
+
 /*
  *      Print a string to the serial port trying not to disturb
  *      any possible real use of the port...
@@ -1058,23 +1066,7 @@ static void m32r_sio_console_write(struct console *co, const char *s,
         ier = sio_in(up, SIOTRCR);
         sio_out(up, SIOTRCR, 0);
 
-        /*
-         *      Now, do each character
-         */
-        for (i = 0; i < count; i++, s++) {
-                wait_for_xmitr(up);
-
-                /*
-                 *      Send the character out.
-                 *      If a LF, also do CR...
-                 */
-                sio_out(up, SIOTXB, *s);
-
-                if (*s == 10) {
-                        wait_for_xmitr(up);
-                        sio_out(up, SIOTXB, 13);
-                }
-        }
+        uart_console_write(&up->port, s, count, m32r_sio_console_putchar);
 
         /*
          *      Finally, wait for transmitter to become empty