linux-kernel - [PATCH 3/3] Char: mxser_new, remove useless spinlock

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Date:	Fri, 22 Dec 2006 23:51:10 +0100 (CET)
From:	Jiri Slaby <jirislaby@...il.com>
To:	Andrew Morton <akpm@...l.org>
Cc:	<linux-kernel@...r.kernel.org>
Subject: [PATCH 3/3] Char: mxser_new, remove useless spinlock

mxser_new, remove useless spinlock

gm_lock is useless, since ISA is configured at init time and there it's
serialized.

Signed-off-by: Jiri Slaby <jirislaby@...il.com>

---
commit 5f93193574c932263132e3262853be671e9d1642
tree 94693e221836fd7234e290b9911757357889a580
parent 04a4dbf03a9fdc4c53282ab7e1db146389140c3b
author Jiri Slaby <jirislaby@...il.com> Fri, 22 Dec 2006 23:04:17 +0059
committer Jiri Slaby <jirislaby@...il.com> Fri, 22 Dec 2006 23:04:17 +0059

 drivers/char/mxser_new.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)

diff --git a/drivers/char/mxser_new.c b/drivers/char/mxser_new.c
index 2f173e9..103f0b5 100644
--- a/drivers/char/mxser_new.c
+++ b/drivers/char/mxser_new.c
@@ -313,7 +313,6 @@ static int mxvar_diagflag;
 static unsigned char mxser_msr[MXSER_PORTS + 1];
 static struct mxser_mon_ext mon_data_ext;
 static int mxser_set_baud_method[MXSER_PORTS + 1];
-static spinlock_t gm_lock;
 
 #ifdef CONFIG_PCI
 static int __devinit CheckIsMoxaMust(int io)
@@ -1377,7 +1376,6 @@ static int __init mxser_program_mode(int port)
 {
 	int id, i, j, n;
 
-	spin_lock(&gm_lock);
 	outb(0, port);
 	outb(0, port);
 	outb(0, port);
@@ -1385,7 +1383,6 @@ static int __init mxser_program_mode(int port)
 	(void)inb(port);
 	outb(0, port);
 	(void)inb(port);
-	spin_unlock(&gm_lock);
 
 	id = inb(port + 1) & 0x1F;
 	if ((id != C168_ASIC_ID) &&
@@ -2684,7 +2681,6 @@ static int __init mxser_module_init(void)
 	mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1);
 	if (!mxvar_sdriver)
 		return -ENOMEM;
-	spin_lock_init(&gm_lock);
 
 	printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n",
 		MXSER_VERSION);
-
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