linux-kernel - [PATCH v3 3/5] serial: 8250/uniphier: fix modular build

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Message-Id: <1455721357-4008289-4-git-send-email-arnd@arndb.de>
Date:	Wed, 17 Feb 2016 16:02:33 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-arm-kernel@...ts.infradead.org,
	Arnd Bergmann <arnd@...db.de>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
	Masahiro Yamada <yamada.masahiro@...ionext.com>,
	Peter Hurley <peter@...leysoftware.com>,
	Jiri Slaby <jslaby@...e.com>
Subject: [PATCH v3 3/5] serial: 8250/uniphier: fix modular build

The newly added uniphier serial port driver fails to build as
a loadable module when the base 8250 driver is built-in and
its console support enabled:

ERROR: "early_serial8250_setup" [drivers/tty/serial/8250/8250_uniphier.ko] undefined!

This changes the driver to only provide the early console support
if it is built-in itself as well.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/tty/serial/8250/8250_uniphier.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/8250/8250_uniphier.c b/drivers/tty/serial/8250/8250_uniphier.c
index bab6b3ae2540..1b7bd26555b7 100644
--- a/drivers/tty/serial/8250/8250_uniphier.c
+++ b/drivers/tty/serial/8250/8250_uniphier.c
@@ -35,7 +35,7 @@ struct uniphier8250_priv {
 	spinlock_t atomic_write_lock;
 };
 
-#ifdef CONFIG_SERIAL_8250_CONSOLE
+#if defined(CONFIG_SERIAL_8250_CONSOLE) && !defined(MODULE)
 static int __init uniphier_early_console_setup(struct earlycon_device *device,
 					       const char *options)
 {
-- 
2.7.0