From: Serge Semin <fancer.lancer@gmail.com>
Date: Tue, 14 May 2019 10:14:10 +0000 (+0300)
Subject: tty: max310x: Introduce max310x_one port macro-wrapper
X-Git-Tag: v5.4-rc1~601^2~64
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1b5d239af3dad5b2572c9dab2e70f6735410e18f;p=platform%2Fkernel%2Flinux-rpi.git

tty: max310x: Introduce max310x_one port macro-wrapper

uart_port structure instance is embedded into the max310x_one
super-structure, which is accessed by some of the uart-port callback
methods. In order to improve the callback's code readability lets
define the to_max310x_port() wrapper which just translates the passed
uart_port pointer to the max310x_one one. It is also going to be
handy in future commits.

Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 4ee8058..527f147 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -259,6 +259,8 @@ struct max310x_one {
 	struct work_struct	md_work;
 	struct work_struct	rs_work;
 };
+#define to_max310x_port(_port) \
+	container_of(_port, struct max310x_one, port)
 
 struct max310x_port {
 	struct max310x_devtype	*devtype;
@@ -765,7 +767,7 @@ static void max310x_handle_tx(struct uart_port *port)
 
 static void max310x_start_tx(struct uart_port *port)
 {
-	struct max310x_one *one = container_of(port, struct max310x_one, port);
+	struct max310x_one *one = to_max310x_port(port);
 
 	schedule_work(&one->tx_work);
 }
@@ -858,7 +860,7 @@ static void max310x_md_proc(struct work_struct *ws)
 
 static void max310x_set_mctrl(struct uart_port *port, unsigned int mctrl)
 {
-	struct max310x_one *one = container_of(port, struct max310x_one, port);
+	struct max310x_one *one = to_max310x_port(port);
 
 	schedule_work(&one->md_work);
 }
@@ -981,7 +983,7 @@ static void max310x_rs_proc(struct work_struct *ws)
 static int max310x_rs485_config(struct uart_port *port,
 				struct serial_rs485 *rs485)
 {
-	struct max310x_one *one = container_of(port, struct max310x_one, port);
+	struct max310x_one *one = to_max310x_port(port);
 
 	if ((rs485->delay_rts_before_send > 0x0f) ||
 	    (rs485->delay_rts_after_send > 0x0f))