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From: Jukka Rissanen <jukka.rissanen@linux.intel.com>
To: linux-bluetooth@vger.kernel.org
Subject: [PATCH v8 4/5] Bluetooth: 6LoWPAN: Count module usage
Date: Wed, 18 Jun 2014 16:37:10 +0300	[thread overview]
Message-ID: <1403098631-4115-5-git-send-email-jukka.rissanen@linux.intel.com> (raw)
In-Reply-To: <1403098631-4115-1-git-send-email-jukka.rissanen@linux.intel.com>

Count how many 6LoWPAN connections there exists so that we
do not unload the module if there are still connections alive.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
---
 net/bluetooth/6lowpan.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c
index ceffe20..ba6c641 100644
--- a/net/bluetooth/6lowpan.c
+++ b/net/bluetooth/6lowpan.c
@@ -100,6 +100,8 @@ static inline bool peer_del(struct lowpan_dev *dev, struct lowpan_peer *peer)
 {
 	list_del(&peer->list);
 
+	module_put(THIS_MODULE);
+
 	if (atomic_dec_and_test(&dev->peer_count)) {
 		BT_DBG("last peer");
 		return true;
@@ -752,6 +754,9 @@ static inline void chan_ready_cb(struct l2cap_chan *chan)
 		}
 	}
 
+	if (!try_module_get(THIS_MODULE))
+		return;
+
 	add_peer_chan(chan, dev);
 	ifup(dev->netdev);
 }
-- 
1.8.3.1


  parent reply	other threads:[~2014-06-18 13:37 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-18 13:37 [PATCH v8 0/5] Bluetooth LE 6LoWPAN using CoC Jukka Rissanen
2014-06-18 13:37 ` [PATCH v8 1/5] Bluetooth: Provide L2CAP ops callback for memcpy_fromiovec Jukka Rissanen
2014-06-18 13:37 ` [PATCH v8 2/5] Bluetooth: 6LoWPAN: Use connected oriented channel instead of fixed one Jukka Rissanen
2014-06-18 13:37 ` [PATCH v8 3/5] Bluetooth: 6LoWPAN: Create a kernel module Jukka Rissanen
2014-06-18 13:37 ` Jukka Rissanen [this message]
2014-06-18 13:37 ` [PATCH v8 5/5] Bluetooth: 6LoWPAN: Remove network devices when unloading Jukka Rissanen
2014-06-23 10:16 ` [PATCH v8 0/5] Bluetooth LE 6LoWPAN using CoC Marcel Holtmann

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