Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  hwmon: (fschmd) Fix a memleak on multiple opens of /dev/watchdog
  hwmon: (asus_atk0110) Do not fail if MBIF is missing
  hwmon: (amc6821) Double unlock bug
  hwmon: (smsc47m1) Fix section mismatch

drivers/hwmon/amc6821.c

@@ -686,7 +686,6 @@ static ssize_t set_fan1_div(
 		data->fan1_div = 4;
 		break;
 	default:
-		mutex_unlock(&data->update_lock);
 		count = -EINVAL;
 		goto EXIT;
 	}

drivers/hwmon/asus_atk0110.c

@@ -1329,17 +1329,16 @@ static int atk_add(struct acpi_device *device)
 			&buf, ACPI_TYPE_PACKAGE);
 	if (ret != AE_OK) {
 		dev_dbg(&device->dev, "atk: method MBIF not found\n");
-		err = -ENODEV;
-		goto out;
-	}
-
-	obj = buf.pointer;
-	if (obj->package.count >= 2 &&
-			obj->package.elements[1].type == ACPI_TYPE_STRING) {
-		dev_dbg(&device->dev, "board ID = %s\n",
-				obj->package.elements[1].string.pointer);
+	} else {
+		obj = buf.pointer;
+		if (obj->package.count >= 2) {
+			union acpi_object *id = &obj->package.elements[1];
+			if (id->type == ACPI_TYPE_STRING)
+				dev_dbg(&device->dev, "board ID = %s\n",
+					id->string.pointer);
+		}
+		ACPI_FREE(buf.pointer);
 	}
-	ACPI_FREE(buf.pointer);
 
 	err = atk_probe_if(data);
 	if (err) {

drivers/hwmon/fschmd.c

@@ -768,6 +768,7 @@ static int watchdog_stop(struct fschmd_data *data)
 static int watchdog_open(struct inode *inode, struct file *filp)
 {
 	struct fschmd_data *pos, *data = NULL;
+	int watchdog_is_open;
 
 	/* We get called from drivers/char/misc.c with misc_mtx hold, and we
 	   call misc_register() from fschmd_probe() with watchdog_data_mutex
@@ -782,10 +783,12 @@ static int watchdog_open(struct inode *inode, struct file *filp)
 		}
 	}
 	/* Note we can never not have found data, so we don't check for this */
-	kref_get(&data->kref);
+	watchdog_is_open = test_and_set_bit(0, &data->watchdog_is_open);
+	if (!watchdog_is_open)
+		kref_get(&data->kref);
 	mutex_unlock(&watchdog_data_mutex);
 
-	if (test_and_set_bit(0, &data->watchdog_is_open))
+	if (watchdog_is_open)
 		return -EBUSY;
 
 	/* Start the watchdog */

drivers/hwmon/smsc47m1.c

@@ -488,7 +488,7 @@ static int __init smsc47m1_find(unsigned short *addr,
 }
 
 /* Restore device to its initial state */
-static void __init smsc47m1_restore(const struct smsc47m1_sio_data *sio_data)
+static void smsc47m1_restore(const struct smsc47m1_sio_data *sio_data)
 {
 	if ((sio_data->activate & 0x01) == 0) {
 		superio_enter();