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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2006-03-20 23:00:09 +0300
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-03-20 23:00:09 +0300
commitd358788f3f30113e49882187d794832905e42592 (patch)
tree8c796ee4bf719dad4d3947c03cef2f3fd6cb5940 /drivers/serial/8250.c
parent7705a8792b0fc82fd7d4dd923724606bbfd9fb20 (diff)
downloadlinux-d358788f3f30113e49882187d794832905e42592.tar.xz
[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>
Diffstat (limited to 'drivers/serial/8250.c')
-rw-r--r--drivers/serial/8250.c26
1 files changed, 9 insertions, 17 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 7aca22c9976d..5996d3cd0ed8 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2182,6 +2182,14 @@ static inline void wait_for_xmitr(struct uart_8250_port *up, int bits)
}
}
+static void serial8250_console_putchar(struct uart_port *port, int ch)
+{
+ struct uart_8250_port *up = (struct uart_8250_port *)port;
+
+ wait_for_xmitr(up, UART_LSR_THRE);
+ serial_out(up, UART_TX, ch);
+}
+
/*
* Print a string to the serial port trying not to disturb
* any possible real use of the port...
@@ -2193,7 +2201,6 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count)
{
struct uart_8250_port *up = &serial8250_ports[co->index];
unsigned int ier;
- int i;
touch_nmi_watchdog();
@@ -2207,22 +2214,7 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count)
else
serial_out(up, UART_IER, 0);
- /*
- * Now, do each character
- */
- for (i = 0; i < count; i++, s++) {
- wait_for_xmitr(up, UART_LSR_THRE);
-
- /*
- * Send the character out.
- * If a LF, also do CR...
- */
- serial_out(up, UART_TX, *s);
- if (*s == 10) {
- wait_for_xmitr(up, UART_LSR_THRE);
- serial_out(up, UART_TX, 13);
- }
- }
+ uart_console_write(&up->port, s, count, serial8250_console_putchar);
/*
* Finally, wait for transmitter to become empty