[PATCH v2 2/3] serial: 8250: allow zero runtime-configured ports

["Martin Hundebøll" <martin@geanix.com>]

One should be able to set CONFIG_SERIAL_8250_RUNTIME_UARTS=0 on
platforms with zero built-in 8250-like ports. However, that case was
prohibited in commit 59cfc45f17d6
("serial: 8250: Do nothing if nr_uarts=0"), because of missing array
initialization, effectively disabling the driver entirely.

The missing array initialization has been fixed in the previous commit,
so remove check for zero runtime ports. Said check gets to stay when
initializing early consoles, though, because that makes sense for
built-in ports only.

Signed-off-by: Martin Hundebøll <martin@geanix.com>
---
 drivers/tty/serial/8250/8250_core.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index a166cc66e7d1..ba48431ec6e2 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -680,9 +680,6 @@ static struct console univ8250_console = {
 
 static int __init univ8250_console_init(void)
 {
-	if (nr_uarts == 0)
-		return -ENODEV;
-
 	serial8250_isa_init_ports();
 	register_console(&univ8250_console);
 	return 0;
@@ -1171,9 +1168,6 @@ static int __init serial8250_init(void)
 {
 	int ret;
 
-	if (nr_uarts == 0)
-		return -ENODEV;
-
 	serial8250_isa_init_ports();
 
 	pr_info("Serial: 8250/16550 driver, %d ports, IRQ sharing %sabled\n",
-- 
2.38.0