Messages in this thread Patch in this message | | | From | Michal Simek <> | Subject | [RESEND PATCH] tty: serial: xuartps: Setup early console when uartclk is also passed | Date | Mon, 23 Apr 2018 10:55:21 +0200 |
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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@xilinx.com> ---
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 19d370779767..0fc9de20843c 100644 --- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -1142,7 +1142,7 @@ 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; -- 2.17.0
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