[PATCH v3 3/3] serial: 8250_early: squash wait_for_xmitr() into serial_putc()
From: Masahiro Yamada
Date: Thu Oct 29 2015 - 22:39:27 EST
Now, wait_for_xmitr() is only called from serial_putc(), and both
are short enough. They can be merged into a single function.
Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
---
drivers/tty/serial/8250/8250_early.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c
index 0b65a26..f9e25ed 100644
--- a/drivers/tty/serial/8250/8250_early.c
+++ b/drivers/tty/serial/8250/8250_early.c
@@ -76,24 +76,20 @@ static void __init serial8250_early_out(struct uart_port *port, int offset, int
#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
-static void __init wait_for_xmitr(struct uart_port *port)
+static void __init serial_putc(struct uart_port *port, int c)
{
unsigned int status;
+ serial8250_early_out(port, UART_TX, c);
+
for (;;) {
status = serial8250_early_in(port, UART_LSR);
if ((status & BOTH_EMPTY) == BOTH_EMPTY)
- return;
+ break;
cpu_relax();
}
}
-static void __init serial_putc(struct uart_port *port, int c)
-{
- serial8250_early_out(port, UART_TX, c);
- wait_for_xmitr(port);
-}
-
static void __init early_serial8250_write(struct console *console,
const char *s, unsigned int count)
{
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/