From d856c66618f953fc3cd1e613226d5f098ad322c8 Mon Sep 17 00:00:00 2001
From: Russell King <rmk@dyn-67.arm.linux.org.uk>
Date: Thu, 23 Feb 2006 10:22:13 +0000
Subject: [PATCH] [SERIAL] Add comment about early_serial_setup()
early_serial_setup() must not be called after console initialisation.
Add a comment prior to the function explicitly stating this.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
drivers/serial/8250.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 244e8ff119777..7aca22c9976d0 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2326,6 +2326,12 @@ static struct uart_driver serial8250_reg = {
.cons = SERIAL8250_CONSOLE,
};
+/*
+ * early_serial_setup - early registration for 8250 ports
+ *
+ * Setup an 8250 port structure prior to console initialisation. Use
+ * after console initialisation will cause undefined behaviour.
+ */
int __init early_serial_setup(struct uart_port *port)
{
if (port->line >= ARRAY_SIZE(serial8250_ports))