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From: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
To: jim.cromie@gmail.com
Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org
Subject: [PATCH 5/5] scx200: use mutex instead of semaphore
Date: Fri, 27 Apr 2007 10:52:17 +0200	[thread overview]
Message-ID: <20070427085217.GG4213@traven> (raw)
In-Reply-To: <20070427083857.GB4213@traven>

the scx200 driver use a semaphore as mutex. use the mutex API instead
of the (binary) semaphore

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com

--
diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c
index 0b082c5..669d2ac 100644
--- a/drivers/i2c/busses/scx200_acb.c
+++ b/drivers/i2c/busses/scx200_acb.c
@@ -389,7 +389,7 @@ static const struct i2c_algorithm scx200_acb_algorithm = {
 };
 
 static struct scx200_acb_iface *scx200_acb_list;
-static DECLARE_MUTEX(scx200_acb_list_mutex);
+static DEFINE_MUTEX(scx200_acb_list_mutex);
 
 static __init int scx200_acb_probe(struct scx200_acb_iface *iface)
 {
@@ -473,10 +473,10 @@ static int __init scx200_acb_create(struct scx200_acb_iface *iface)
 		return -ENODEV;
 	}
 
-	down(&scx200_acb_list_mutex);
+	mutex_lock(&scx200_acb_list_mutex);
 	iface->next = scx200_acb_list;
 	scx200_acb_list = iface;
-	up(&scx200_acb_list_mutex);
+	mutex_unlock(&scx200_acb_list_mutex);
 
 	return 0;
 }
@@ -633,10 +633,10 @@ static void __exit scx200_acb_cleanup(void)
 {
 	struct scx200_acb_iface *iface;
 
-	down(&scx200_acb_list_mutex);
+	mutex_lock(&scx200_acb_list_mutex);
 	while ((iface = scx200_acb_list) != NULL) {
 		scx200_acb_list = iface->next;
-		up(&scx200_acb_list_mutex);
+		mutex_unlock(&scx200_acb_list_mutex);
 
 		i2c_del_adapter(&iface->adapter);
 
@@ -648,9 +648,9 @@ static void __exit scx200_acb_cleanup(void)
 			release_region(iface->base, 8);
 
 		kfree(iface);
-		down(&scx200_acb_list_mutex);
+		mutex_lock(&scx200_acb_list_mutex);
 	}
-	up(&scx200_acb_list_mutex);
+	mutex_unlock(&scx200_acb_list_mutex);
 }
 
 module_init(scx200_acb_init);

-- 
Matthias Kaehlcke
Linux Application Developer
Barcelona

              We build too many walls and not enough bridges
                             (Isaac Newton)
                                                                 .''`.
    using free software / Debian GNU/Linux | http://debian.org  : :'  :
                                                                `. `'`
gpg --keyserver pgp.mit.edu --recv-keys 47D8E5D4                  `-

      parent reply	other threads:[~2007-04-27  8:49 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-04-27  8:38 [PATCH 0/5] use mutex instead of semaphore in several drivers Matthias Kaehlcke
2007-04-27  8:43 ` [PATCH 1/5] Power Management: use mutexes instead of semaphores Matthias Kaehlcke
2007-04-28 10:42   ` Pavel Machek
2007-05-04  5:54   ` Andrew Morton
2007-05-04  7:08     ` Matthias Kaehlcke
2007-05-04  7:18       ` Andrew Morton
2007-04-27  8:45 ` [PATCH 2/5] Kcopyd: use mutex instead of semaphore Matthias Kaehlcke
2007-04-27  8:48 ` [PATCH 3/5] sysdev: " Matthias Kaehlcke
2007-04-27  8:50 ` [PATCH 4/5] pvrusb2: " Matthias Kaehlcke
2007-04-27 13:55   ` Mike Isely
2007-04-27  8:52 ` Matthias Kaehlcke [this message]

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