linux-kernel - [PATCH v3 1/3] tty: serial: 8250: export early_serial8250

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Date:	Tue, 28 Apr 2015 21:40:32 +0800
From:	Eddie Huang <eddie.huang@...iatek.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Matthias Brugger <matthias.bgg@...il.com>
CC:	<srv_heupstream@...iatek.com>, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>, Jiri Slaby <jslaby@...e.cz>,
	Eddie Huang <eddie.huang@...iatek.com>,
	Howard Chen <ibanezchen@...il.com>,
	Ashwin Chaugule <ashwin.chaugule@...aro.org>,
	Peter Hurley <peter@...leysoftware.com>,
	Wang Long <long.wanglong@...wei.com>,
	Kevin Cernekee <cernekee@...il.com>,
	Vineet Gupta <Vineet.Gupta1@...opsys.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Alan Cox <alan@...ux.intel.com>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linux-serial@...r.kernel.org>,
	<linux-mediatek@...ts.infradead.org>,
	Sascha Hauer <kernel@...gutronix.de>
Subject: [PATCH v3 1/3] tty: serial: 8250: export early_serial8250_setup function

8250-like uart driver may call early_serial8250_setup to
reuse 8250_early.c character output function.

Signed-off-by: Eddie Huang <eddie.huang@...iatek.com>
---
 drivers/tty/serial/8250/8250_early.c | 2 +-
 include/linux/serial_8250.h          | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c
index 6c0fd8b..771dda2 100644
--- a/drivers/tty/serial/8250/8250_early.c
+++ b/drivers/tty/serial/8250/8250_early.c
@@ -131,7 +131,7 @@ static void __init init_port(struct earlycon_device *device)
 	serial8250_early_out(port, UART_LCR, c & ~UART_LCR_DLAB);
 }
 
-static int __init early_serial8250_setup(struct earlycon_device *device,
+int __init early_serial8250_setup(struct earlycon_device *device,
 					 const char *options)
 {
 	if (!(device->port.membase || device->port.iobase))
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index 78097e7..f0c68d8 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -137,6 +137,8 @@ extern int early_serial_setup(struct uart_port *port);
 
 extern unsigned int serial8250_early_in(struct uart_port *port, int offset);
 extern void serial8250_early_out(struct uart_port *port, int offset, int value);
+extern int early_serial8250_setup(struct earlycon_device *device,
+					 const char *options);
 extern void serial8250_do_set_termios(struct uart_port *port,
 		struct ktermios *termios, struct ktermios *old);
 extern int serial8250_do_startup(struct uart_port *port);
-- 
1.8.1.1.dirty

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