From: Jiri Slaby <jslaby@suse.cz>
Date: Thu, 7 Mar 2013 12:12:28 +0000 (+0100)
Subject: TTY: msm_smd_tty, clean up activate/shutdown
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6982a398426a22166eaf049b79544536fdd6429f;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

TTY: msm_smd_tty, clean up activate/shutdown

Do not dig struct smd_tty_info out of tty_struct using
tty_port_tty_get. It is unnecessarily too complicated, use simple
container_of instead.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serial/msm_smd_tty.c b/drivers/tty/serial/msm_smd_tty.c
index e722ff163d91..1238ac370bff 100644
--- a/drivers/tty/serial/msm_smd_tty.c
+++ b/drivers/tty/serial/msm_smd_tty.c
@@ -90,13 +90,13 @@ static void smd_tty_notify(void *priv, unsigned event)
 
 static int smd_tty_port_activate(struct tty_port *tport, struct tty_struct *tty)
 {
+	struct smd_tty_info *info = container_of(tport, struct smd_tty_info,
+			port);
 	int i, res = 0;
-	int n = tty->index;
 	const char *name = NULL;
-	struct smd_tty_info *info = smd_tty + n;
 
 	for (i = 0; i < smd_tty_channels_len; i++) {
-		if (smd_tty_channels[i].id == n) {
+		if (smd_tty_channels[i].id == tty->index) {
 			name = smd_tty_channels[i].name;
 			break;
 		}
@@ -117,17 +117,13 @@ static int smd_tty_port_activate(struct tty_port *tport, struct tty_struct *tty)
 
 static void smd_tty_port_shutdown(struct tty_port *tport)
 {
-	struct smd_tty_info *info;
-	struct tty_struct *tty = tty_port_tty_get(tport);
+	struct smd_tty_info *info = container_of(tport, struct smd_tty_info,
+			port);
 
-	info = tty->driver_data;
 	if (info->ch) {
 		smd_close(info->ch);
 		info->ch = 0;
 	}
-
-	tty->driver_data = 0;
-	tty_kref_put(tty);
 }
 
 static int smd_tty_open(struct tty_struct *tty, struct file *f)