tty: serial: print earlycon info after match->setup

8250 devices may modify iotype in their own earlycon setup. For example:
8250_mtk and 8250_uniphier force iotype to be MMIO32. Print earlycon info
after match->setup to reflect actual earlycon info.

Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Link: https://lore.kernel.org/r/20200915054825.3289105-1-hsinyi@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c
index 2ae9190..b708779 100644 (file)
--- a/drivers/tty/serial/earlycon.c
+++ b/drivers/tty/serial/earlycon.c
@@ -56,7 +56,6 @@ static void __init earlycon_init(struct earlycon_device *device,
                                 const char *name)
 {
        struct console *earlycon = device->con;
-       struct uart_port *port = &device->port;
        const char *s;
        size_t len;
 
@@ -70,6 +69,12 @@ static void __init earlycon_init(struct earlycon_device *device,
        len = s - name;
        strlcpy(earlycon->name, name, min(len + 1, sizeof(earlycon->name)));
        earlycon->data = &early_console_dev;
+}
+
+static void __init earlycon_print_info(struct earlycon_device *device)
+{
+       struct console *earlycon = device->con;
+       struct uart_port *port = &device->port;
 
        if (port->iotype == UPIO_MEM || port->iotype == UPIO_MEM16 ||
            port->iotype == UPIO_MEM32 || port->iotype == UPIO_MEM32BE)
@@ -140,6 +145,7 @@ static int __init register_earlycon(char *buf, const struct earlycon_id *match)
 
        earlycon_init(&early_console_dev, match->name);
        err = match->setup(&early_console_dev, buf);
+       earlycon_print_info(&early_console_dev);
        if (err < 0)
                return err;
        if (!early_console_dev.con->write)
@@ -302,6 +308,7 @@ int __init of_setup_earlycon(const struct earlycon_id *match,
        }
        earlycon_init(&early_console_dev, match->name);
        err = match->setup(&early_console_dev, options);
+       earlycon_print_info(&early_console_dev);
        if (err < 0)
                return err;
        if (!early_console_dev.con->write)