Baudrate calculation depends on requested baudrate and uart clock. This patch is checking that uartclk is also passed. The same logic is used 8250_early.c/init_port function. Signed-off-by: Michal Simek <michal.simek@xxxxxxxxxx> --- drivers/tty/serial/xilinx_uartps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c index b9b2bc76bcac..a654cda203c7 100644 --- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -1181,7 +1181,7 @@ static int __init cdns_early_console_setup(struct earlycon_device *device, /* only set baud if specified on command line - otherwise * assume it has been initialized by a boot loader. */ - if (device->baud) { + if (port->uartclk && device->baud) { u32 cd = 0, bdiv = 0; u32 mr; int div8; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html