serial: sunzilog: Return proper error code from console ->setup() hook

For unifying console ->setup() handling, which is poorly documented,
return error code, rather than non-zero arbitrary number.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20200618164751.56828-4-andriy.shevchenko@linux.intel.com

diff --git a/drivers/tty/serial/sunzilog.c b/drivers/tty/serial/sunzilog.c
index 103ab8c556e736b46649f2f2469960ecb78e732a..7ea06bbc61973e501c449e517f561f0865819b39 100644 (file)
--- a/drivers/tty/serial/sunzilog.c
+++ b/drivers/tty/serial/sunzilog.c
@@ -1221,7 +1221,7 @@ static int __init sunzilog_console_setup(struct console *con, char *options)
        int baud, brg;
 
        if (up->port.type != PORT_SUNZILOG)
-               return -1;
+               return -EINVAL;
 
        printk(KERN_INFO "Console: ttyS%d (SunZilog zs%d)\n",
               (sunzilog_reg.minor - 64) + con->index, con->index);