Messages in this thread Patch in this message | | | From | Florian Fainelli <> | Date | Mon, 1 Jun 2009 14:01:15 +0200 | Subject | [PATCH 6/9] serial: workaround TI AR7 silicon bug |
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This patch make the serial8250_console_putchar work on TI AR7 hardware which has a hardware bug clobbering serial characters resulting in an almost unusable kernel console.
Signed-off-by: Florian Fainelli <florian@openwrt.org> --- diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index 03376b0..16b5a7e 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -2694,7 +2694,11 @@ static void serial8250_console_putchar(struct uart_port *port, int ch) { struct uart_8250_port *up = (struct uart_8250_port *)port; +#ifdef CONFIG_AR7 + wait_for_xmitr(up, BOTH_EMPTY); +#else wait_for_xmitr(up, UART_LSR_THRE); +#endif serial_out(up, UART_TX, ch); }
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