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authorLinus Torvalds <torvalds@linux-foundation.org>2011-04-01 11:53:50 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-04-01 11:53:50 -0400
commit84daeb09ef2b11cb0b29e100766e38e206c8bc47 (patch)
treec89748e1bb8618aac7ad0d2079fba43543844483 /drivers/connector/connector.c
parentecb78ab6f30106ab72a575a25b1cdfd1633b7ca2 (diff)
parentc100c8f4c3c6f2a407bdbaaad2c4f1062e6a473a (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: appletalk: Fix OOPS in atalk_release(). mlx4: Fixing bad size of event queue buffer mlx4: Fixing use after free bonding:typo in comment sctp: Pass __GFP_NOWARN to hash table allocation attempts. connector: convert to synchronous netlink message processing fib: add rtnl locking in ip_fib_net_exit atm/solos-pci: Don't flap VCs when carrier state changes atm/solos-pci: Don't include frame pseudo-header on transmit hex-dump atm/solos-pci: Use VPI.VCI notation uniformly. Atheros, atl2: Fix mem leaks in error paths of atl2_set_eeprom netdev: fix mtu check when TSO is enabled net/usb: Ethernet quirks for the LG-VL600 4G modem phylib: phy_attach_direct: phy_init_hw can fail, add cleanup bridge: mcast snooping, fix length check of snooped MLDv1/2 via-ircc: Pass PCI device pointer to dma_{alloc, free}_coherent() via-ircc: Use pci_{get, set}_drvdata() instead of static pointer variable net: gre: provide multicast mappings for ipv4 and ipv6 bridge: Fix compilation warning in function br_stp_recalculate_bridge_id() net: Fix warnings caused by MAX_SKB_FRAGS change.
Diffstat (limited to 'drivers/connector/connector.c')
-rw-r--r--drivers/connector/connector.c47
1 files changed, 12 insertions, 35 deletions
diff --git a/drivers/connector/connector.c b/drivers/connector/connector.c
index f7554de3be5e..d77005849af8 100644
--- a/drivers/connector/connector.c
+++ b/drivers/connector/connector.c
@@ -122,51 +122,28 @@ EXPORT_SYMBOL_GPL(cn_netlink_send);
122 */ 122 */
123static int cn_call_callback(struct sk_buff *skb) 123static int cn_call_callback(struct sk_buff *skb)
124{ 124{
125 struct cn_callback_entry *__cbq, *__new_cbq; 125 struct cn_callback_entry *i, *cbq = NULL;
126 struct cn_dev *dev = &cdev; 126 struct cn_dev *dev = &cdev;
127 struct cn_msg *msg = NLMSG_DATA(nlmsg_hdr(skb)); 127 struct cn_msg *msg = NLMSG_DATA(nlmsg_hdr(skb));
128 struct netlink_skb_parms *nsp = &NETLINK_CB(skb);
128 int err = -ENODEV; 129 int err = -ENODEV;
129 130
130 spin_lock_bh(&dev->cbdev->queue_lock); 131 spin_lock_bh(&dev->cbdev->queue_lock);
131 list_for_each_entry(__cbq, &dev->cbdev->queue_list, callback_entry) { 132 list_for_each_entry(i, &dev->cbdev->queue_list, callback_entry) {
132 if (cn_cb_equal(&__cbq->id.id, &msg->id)) { 133 if (cn_cb_equal(&i->id.id, &msg->id)) {
133 if (likely(!work_pending(&__cbq->work) && 134 atomic_inc(&i->refcnt);
134 __cbq->data.skb == NULL)) { 135 cbq = i;
135 __cbq->data.skb = skb;
136
137 if (queue_work(dev->cbdev->cn_queue,
138 &__cbq->work))
139 err = 0;
140 else
141 err = -EINVAL;
142 } else {
143 struct cn_callback_data *d;
144
145 err = -ENOMEM;
146 __new_cbq = kzalloc(sizeof(struct cn_callback_entry), GFP_ATOMIC);
147 if (__new_cbq) {
148 d = &__new_cbq->data;
149 d->skb = skb;
150 d->callback = __cbq->data.callback;
151 d->free = __new_cbq;
152
153 INIT_WORK(&__new_cbq->work,
154 &cn_queue_wrapper);
155
156 if (queue_work(dev->cbdev->cn_queue,
157 &__new_cbq->work))
158 err = 0;
159 else {
160 kfree(__new_cbq);
161 err = -EINVAL;
162 }
163 }
164 }
165 break; 136 break;
166 } 137 }
167 } 138 }
168 spin_unlock_bh(&dev->cbdev->queue_lock); 139 spin_unlock_bh(&dev->cbdev->queue_lock);
169 140
141 if (cbq != NULL) {
142 cbq->callback(msg, nsp);
143 kfree_skb(skb);
144 cn_queue_release_callback(cbq);
145 }
146
170 return err; 147 return err;
171} 148}
172 149