[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, 3 insertions, 8 deletions

diff --git a/drivers/serial/ip22zilog.c b/drivers/serial/ip22zilog.c
index 193722d680cf..651772474ac1 100644
--- a/drivers/serial/ip22zilog.c
+++ b/drivers/serial/ip22zilog.c
@@ -967,8 +967,9 @@ static struct zilog_layout * __init get_zs(int chip)
 #define ZS_PUT_CHAR_MAX_DELAY   2000    /* 10 ms */
 
 #ifdef CONFIG_SERIAL_IP22_ZILOG_CONSOLE
-static void ip22zilog_put_char(struct zilog_channel *channel, unsigned char ch)
+static void ip22zilog_put_char(struct uart_port *port, int ch)
 {
+        struct zilog_channel *channel = ZILOG_CHANNEL_FROM_PORT(port);
         int loops = ZS_PUT_CHAR_MAX_DELAY;
 
         /* This is a timed polling loop so do not switch the explicit
@@ -992,16 +993,10 @@ static void
 ip22zilog_console_write(struct console *con, const char *s, unsigned int count)
 {
         struct uart_ip22zilog_port *up = &ip22zilog_port_table[con->index];
-        struct zilog_channel *channel = ZILOG_CHANNEL_FROM_PORT(&up->port);
         unsigned long flags;
-        int i;
 
         spin_lock_irqsave(&up->port.lock, flags);
-        for (i = 0; i < count; i++, s++) {
-                ip22zilog_put_char(channel, *s);
-                if (*s == 10)
-                        ip22zilog_put_char(channel, 13);
-        }
+        uart_console_write(&up->port, s, count, ip22zilog_put_char);
         udelay(2);
         spin_unlock_irqrestore(&up->port.lock, flags);
 }