[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, 10 insertions, 16 deletions

diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c
index 7410e093a6b9..e4d701239702 100644
--- a/drivers/serial/s3c2410.c
+++ b/drivers/serial/s3c2410.c
@@ -1584,25 +1584,19 @@ s3c24xx_serial_console_txrdy(struct uart_port *port, unsigned int ufcon)
 }
 
 static void
-s3c24xx_serial_console_write(struct console *co, const char *s,
-                             unsigned int count)
+s3c24xx_serial_console_putchar(struct uart_port *port, int ch)
 {
-        int i;
         unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON);
+        while (!s3c24xx_serial_console_txrdy(port, ufcon))
+                barrier();
+        wr_regb(cons_uart, S3C2410_UTXH, ch);
+}
 
-        for (i = 0; i < count; i++) {
-                while (!s3c24xx_serial_console_txrdy(cons_uart, ufcon))
-                        barrier();
-
-                wr_regb(cons_uart, S3C2410_UTXH, s[i]);
-
-                if (s[i] == '\n') {
-                        while (!s3c24xx_serial_console_txrdy(cons_uart, ufcon))
-                                barrier();
-
-                        wr_regb(cons_uart, S3C2410_UTXH, '\r');
-                }
-        }
+static void
+s3c24xx_serial_console_write(struct console *co, const char *s,
+                             unsigned int count)
+{
+        uart_console_write(cons_uart, s, count, s3c24xx_serial_console_putchar);
 }
 
 static void __init