From 947d66b68f3c4e7cf8f3f3500807b9d2a0de28ce Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com>
Date: Fri, 11 Nov 2022 16:25:02 +0200
Subject: [PATCH] n_tty: Rename tail to old_tail in n_tty_read()
Mime-version: 1.0
Content-type: text/plain; charset=UTF-8
Content-transfer-encoding: 8bit
Git-commit: 947d66b68f3c4e7cf8f3f3500807b9d2a0de28ce
Patch-mainline: v6.2-rc1
References: git-fixes

The local tail variable in n_tty_read() is used for one purpose, it
keeps the old tail. Thus, rename it appropriately to improve code
readability.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/22b37499-ff9a-7fc1-f6e0-58411328d122@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/tty/n_tty.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 597019690ae6..c8f56c9b1a1c 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -2130,7 +2130,7 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
 	ssize_t retval = 0;
 	long timeout;
 	bool packet;
-	size_t tail;
+	size_t old_tail;
 
 	/*
 	 * Is this a continuation of a read started earler?
@@ -2193,7 +2193,7 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
 	}
 
 	packet = tty->ctrl.packet;
-	tail = ldata->read_tail;
+	old_tail = ldata->read_tail;
 
 	add_wait_queue(&tty->read_wait, &wait);
 	while (nr) {
@@ -2282,7 +2282,7 @@ static ssize_t n_tty_read(struct tty_struct *tty, struct file *file,
 		if (time)
 			timeout = time;
 	}
-	if (tail != ldata->read_tail)
+	if (old_tail != ldata->read_tail)
 		n_tty_kick_worker(tty);
 	up_read(&tty->termios_rwsem);
 
-- 
2.35.3