linux-kernel - [PATCH v2 2/3] thermal: Split hwmon lookup to a separate function

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Message-ID: <20110426170253.58f05975@endymion.delvare>
Date:	Tue, 26 Apr 2011 17:02:53 +0200
From:	Jean Delvare <khali@...ux-fr.org>
To:	Len Brown <len.brown@...el.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Rene Herman <rene.herman@...il.com>,
	Guenter Roeck <guenter.roeck@...csson.com>
Subject: [PATCH v2 2/3] thermal: Split hwmon lookup to a separate function

We'll soon need to reuse it.

Signed-off-by: Jean Delvare <khali@...ux-fr.org>
Cc: Rene Herman <rene.herman@...il.com>
Cc: Len Brown <len.brown@...el.com>
Cc: Guenter Roeck <guenter.roeck@...csson.com>
---
 drivers/thermal/thermal_sys.c |   25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

--- linux-2.6.39-rc4.orig/drivers/thermal/thermal_sys.c	2011-04-25 14:40:17.000000000 +0200
+++ linux-2.6.39-rc4/drivers/thermal/thermal_sys.c	2011-04-25 14:44:52.000000000 +0200
@@ -469,22 +469,35 @@ temp_crit_show(struct device *dev, struc
 }
 
 
-static int
-thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
+static struct thermal_hwmon_device *
+thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
 {
 	struct thermal_hwmon_device *hwmon;
-	int new_hwmon_device = 1;
-	int result;
 
 	mutex_lock(&thermal_list_lock);
 	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
 		if (!strcmp(hwmon->type, tz->type)) {
-			new_hwmon_device = 0;
 			mutex_unlock(&thermal_list_lock);
-			goto register_sys_interface;
+			return hwmon;
 		}
 	mutex_unlock(&thermal_list_lock);
 
+	return NULL;
+}
+
+static int
+thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
+{
+	struct thermal_hwmon_device *hwmon;
+	int new_hwmon_device = 1;
+	int result;
+
+	hwmon = thermal_hwmon_lookup_by_type(tz);
+	if (hwmon) {
+		new_hwmon_device = 0;
+		goto register_sys_interface;
+	}
+
 	hwmon = kzalloc(sizeof(struct thermal_hwmon_device), GFP_KERNEL);
 	if (!hwmon)
 		return -ENOMEM;

-- 
Jean Delvare
--
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