From: David Herrmann <dh.herrmann@googlemail.com>
Date: Sat, 7 Jan 2012 14:47:21 +0000 (+0100)
Subject: Bluetooth: Correctly acquire module ref
X-Git-Tag: v3.4-rc1~177^2~112^2~241
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=46e06531a5ae13c66f774d3cb1ad78385618a5a2;p=karo-tx-linux.git

Bluetooth: Correctly acquire module ref

We provide a device-object to other subsystems and we provide our own
release-function. Therefore, the device-object must own a reference to
our module, otherwise the release-function may get deleted before the
device-object does.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
---

diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 74b49e330a1d..ec03ee2b301e 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -372,6 +372,7 @@ static void bt_host_release(struct device *dev)
 {
 	void *data = dev_get_drvdata(dev);
 	kfree(data);
+	module_put(THIS_MODULE);
 }
 
 static struct device_type bt_host = {
@@ -523,6 +524,7 @@ void hci_init_sysfs(struct hci_dev *hdev)
 	dev->type = &bt_host;
 	dev->class = bt_class;
 
+	__module_get(THIS_MODULE);
 	dev_set_drvdata(dev, hdev);
 	device_initialize(dev);
 }