diff options
| -rw-r--r-- | drivers/tty/serial/8250/8250_early.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c index 20ec27bf1380..ca16195fb069 100644 --- a/drivers/tty/serial/8250/8250_early.c +++ b/drivers/tty/serial/8250/8250_early.c @@ -73,24 +73,20 @@ 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) { |