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Merge "net: qrtr: Check for exisiting waiters"

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This commit is contained in:
qctecmdr 2020-04-11 21:14:46 -07:00 • committed by Gerrit - the friendly Code Review server
commit d7c669fea5
1 changed files with 8 additions and 0 deletions
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8
net/qrtr/qrtr.c
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@ -500,6 +500,12 @@ static int qrtr_tx_wait(struct qrtr_node *node, struct sockaddr_qrtr *to,
break;
}
if (!ret) {
list_for_each_entry(waiter, &flow->waiters, node) {
if (waiter->sk == sk) {
mutex_unlock(&node->qrtr_tx_lock);
return -EAGAIN;
}
}
waiter = kzalloc(sizeof(*waiter), GFP_KERNEL);
if (!waiter) {
mutex_unlock(&node->qrtr_tx_lock);
@ -508,6 +514,8 @@ static int qrtr_tx_wait(struct qrtr_node *node, struct sockaddr_qrtr *to,
waiter->sk = sk;
sock_hold(sk);
list_add_tail(&waiter->node, &flow->waiters);
QRTR_INFO(node->ilc, "new waiter for [0x%x:0x%x]\n",
to->sq_node, to->sq_port);
mutex_unlock(&node->qrtr_tx_lock);
return -EAGAIN;
}