From d358788f3f30113e49882187d794832905e42592 Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 20 Mar 2006 20:00:09 +0000 Subject: [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 --- drivers/serial/amba-pl011.c | 20 +++++--------------- 1 file changed, 5 insertions(+), 15 deletions(-) (limited to 'drivers/serial/amba-pl011.c') diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c index 034a029e356e..3d966cfc9a38 100644 --- a/drivers/serial/amba-pl011.c +++ b/drivers/serial/amba-pl011.c @@ -587,14 +587,12 @@ static struct uart_amba_port *amba_ports[UART_NR]; #ifdef CONFIG_SERIAL_AMBA_PL011_CONSOLE -static inline void -pl011_console_write_char(struct uart_amba_port *uap, char ch) +static void pl011_console_putchar(struct uart_port *port, int ch) { - unsigned int status; + struct uart_amba_port *uap = (struct uart_amba_port *)port; - do { - status = readw(uap->port.membase + UART01x_FR); - } while (status & UART01x_FR_TXFF); + while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_TXFF) + barrier(); writew(ch, uap->port.membase + UART01x_DR); } @@ -603,7 +601,6 @@ pl011_console_write(struct console *co, const char *s, unsigned int count) { struct uart_amba_port *uap = amba_ports[co->index]; unsigned int status, old_cr, new_cr; - int i; clk_enable(uap->clk); @@ -615,14 +612,7 @@ pl011_console_write(struct console *co, const char *s, unsigned int count) new_cr |= UART01x_CR_UARTEN | UART011_CR_TXE; writew(new_cr, uap->port.membase + UART011_CR); - /* - * Now, do each character - */ - for (i = 0; i < count; i++) { - pl011_console_write_char(uap, s[i]); - if (s[i] == '\n') - pl011_console_write_char(uap, '\r'); - } + uart_console_write(&uap->port, s, count, pl011_console_putchar); /* * Finally, wait for transmitter to become empty -- cgit v1.2.3