linux-kernel - [PATCH v2] tty: serial: jsm_tty: fixed redundant variable issue.

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Date:	Fri,  5 Feb 2016 15:21:03 +0100
From:	Jakob Østergaard Jensen 
	<jakob.jensen.91@...il.com>
To:	cascardo@...ux.vnet.ibm.com, gregkh@...uxfoundation.org,
	jslaby@...e.com
Cc:	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Jakob Østergaard Jensen 
	<jakob.jensen.91@...il.com>
Subject: [PATCH v2] tty: serial: jsm_tty: fixed redundant variable issue.

Fixes unnecessary variable reassignment to a new redundant variable.

Signed-off-by: Jakob Østergaard Jensen <jakob.jensen.91@...il.com>
---
 drivers/tty/serial/jsm/jsm_tty.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/tty/serial/jsm/jsm_tty.c b/drivers/tty/serial/jsm/jsm_tty.c
index 524e86a..723169a 100644
--- a/drivers/tty/serial/jsm/jsm_tty.c
+++ b/drivers/tty/serial/jsm/jsm_tty.c
@@ -529,7 +529,6 @@ void jsm_input(struct jsm_channel *ch)
 	int data_len;
 	unsigned long lock_flags;
 	int len = 0;
-	int n = 0;
 	int s = 0;
 	int i = 0;
 
@@ -598,16 +597,15 @@ void jsm_input(struct jsm_channel *ch)
 	jsm_dbg(READ, &ch->ch_bd->pci_dev, "start 2\n");
 
 	len = tty_buffer_request_room(port, data_len);
-	n = len;
 
 	/*
-	 * n now contains the most amount of data we can copy,
+	 * len now contains the most amount of data we can copy,
 	 * bounded either by the flip buffer size or the amount
 	 * of data the card actually has pending...
 	 */
-	while (n) {
+	while (len) {
 		s = ((head >= tail) ? head : RQUEUESIZE) - tail;
-		s = min(s, n);
+		s = min(s, len);
 
 		if (s <= 0)
 			break;
@@ -638,7 +636,7 @@ void jsm_input(struct jsm_channel *ch)
 			tty_insert_flip_string(port, ch->ch_rqueue + tail, s);
 		}
 		tail += s;
-		n -= s;
+		len -= s;
 		/* Flip queue if needed */
 		tail &= rmask;
 	}
-- 
2.5.0