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From 99125a375a28e6f446a52a8188297d96b0ae6916 Mon Sep 17 00:00:00 2001
From: Paul Gortmaker <paul.gortmaker@windriver.com>
Date: Sun, 23 Jan 2011 11:18:46 -0500
Subject: [PATCH] s3c-hwmon.c: convert semaphore to mutex
This is one of several extractions from the merge up to 33-rc8.
See it in a git tip repo with:
git diff 5f854cfc024622e4aae14d7cf422f6ff86278688^2 \
5f854cfc024622e4aae14d7cf422f6ff86278688 \
drivers/hwmon/s3c-hwmon.c
You can find the origin of this change in the tip merge commit:
commit 5f854cfc024622e4aae14d7cf422f6ff86278688
Merge: cc24da0 4ec62b2
Author: Thomas Gleixner <tglx@linutronix.de>
Date: Sun Feb 21 20:17:22 2010 +0100
Forward to 2.6.33-rc8
Merge branch 'linus' into rt/head with a pile of conflicts.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Normally there are not significant changes/additions in a merge commit that
are not from any other "normal" commit. But in this case there are, so
break them out into separate explicit commits.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
drivers/hwmon/s3c-hwmon.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/hwmon/s3c-hwmon.c b/drivers/hwmon/s3c-hwmon.c
index 3f3f9a4..05248f2 100644
--- a/drivers/hwmon/s3c-hwmon.c
+++ b/drivers/hwmon/s3c-hwmon.c
@@ -51,7 +51,7 @@ struct s3c_hwmon_attr {
* @attr: The holders for the channel attributes.
*/
struct s3c_hwmon {
- struct semaphore lock;
+ struct mutex lock;
struct s3c_adc_client *client;
struct device *hwmon_dev;
@@ -73,14 +73,14 @@ static int s3c_hwmon_read_ch(struct device *dev,
{
int ret;
- ret = down_interruptible(&hwmon->lock);
+ ret = mutex_lock_interruptible(&hwmon->lock);
if (ret < 0)
return ret;
dev_dbg(dev, "reading channel %d\n", channel);
ret = s3c_adc_read(hwmon->client, channel);
- up(&hwmon->lock);
+ mutex_unlock(&hwmon->lock);
return ret;
}
@@ -296,7 +296,7 @@ static int __devinit s3c_hwmon_probe(struct platform_device *dev)
platform_set_drvdata(dev, hwmon);
- init_MUTEX(&hwmon->lock);
+ mutex_init(&hwmon->lock);
/* Register with the core ADC driver. */
--
1.7.0.4
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