serial: 8250_bcm2835aux: Suppress register_port error on -EPROBE_DEFER

Suppress a gratuitous error message if serial8250_register_8250_port()
returns -EPROBE_DEFER.

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Link: https://lore.kernel.org/r/6aea0eacf3bfa73fe2d81082cc723265413410c8.1579175223.git.lukas@wunner.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/8250/8250_bcm2835aux.c b/drivers/tty/serial/8250/8250_bcm2835aux.c
index 33da68341c3a7766c8f26c761485fd5d87b952ea..fb850d0ad64343eb84300654da2dc5ae6d2c0902 100644 (file)
--- a/drivers/tty/serial/8250/8250_bcm2835aux.c
+++ b/drivers/tty/serial/8250/8250_bcm2835aux.c
@@ -95,8 +95,9 @@ static int bcm2835aux_serial_probe(struct platform_device *pdev)
        /* register the port */
        ret = serial8250_register_8250_port(&data->uart);
        if (ret < 0) {
-               dev_err(&pdev->dev, "unable to register 8250 port - %d\n",
-                       ret);
+               if (ret != -EPROBE_DEFER)
+                       dev_err(&pdev->dev,
+                               "unable to register 8250 port - %d\n", ret);
                goto dis_clk;
        }
        data->line = ret;