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tty:n_gsm.c: destroy port by tty_port_destroy() 

According to the comment of tty_port_destroy():
    When a port was initialized using tty_port_init, one has to destroy
    the port by tty_port_destroy();

tty_port_init() is called in gsm_dlci_alloc()
so tty_port_destroy() needs to be called in gsm_dlci_free()

Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
Link: https://lore.kernel.org/r/1569317156-45850-1-git-send-email-nixiaoming@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xiaoming Ni 2019-09-24 17:25:56 +08:00 committed by Greg Kroah-Hartman
parent 530c4ba3fa
commit 7726fb53e7
1 changed files with 1 additions and 0 deletions
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drivers/tty/n_gsm.c
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@ -1681,6 +1681,7 @@ static void gsm_dlci_free(struct tty_port *port)
del_timer_sync(&dlci->t1); del_timer_sync(&dlci->t1);
dlci->gsm->dlci[dlci->addr] = NULL; dlci->gsm->dlci[dlci->addr] = NULL;
tty_port_destroy(&dlci->port);
kfifo_free(dlci->fifo); kfifo_free(dlci->fifo);
while ((dlci->skb = skb_dequeue(&dlci->skb_list))) while ((dlci->skb = skb_dequeue(&dlci->skb_list)))
dev_kfree_skb(dlci->skb); dev_kfree_skb(dlci->skb);