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path: root/drivers/tty/n_gsm.c
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Diffstat (limited to 'drivers/tty/n_gsm.c')
-rw-r--r--drivers/tty/n_gsm.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 1e8e8ce55959..dcc0430a49c8 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -134,7 +134,6 @@ struct gsm_dlci {
#define DLCI_OPENING 1 /* Sending SABM not seen UA */
#define DLCI_OPEN 2 /* SABM/UA complete */
#define DLCI_CLOSING 3 /* Sending DISC not seen UA/DM */
- struct kref ref; /* freed from port or mux close */
struct mutex mutex;
/* Link layer */
@@ -1635,7 +1634,6 @@ static struct gsm_dlci *gsm_dlci_alloc(struct gsm_mux *gsm, int addr)
if (dlci == NULL)
return NULL;
spin_lock_init(&dlci->lock);
- kref_init(&dlci->ref);
mutex_init(&dlci->mutex);
dlci->fifo = &dlci->_fifo;
if (kfifo_alloc(&dlci->_fifo, 4096, GFP_KERNEL) < 0) {
@@ -1669,9 +1667,9 @@ static struct gsm_dlci *gsm_dlci_alloc(struct gsm_mux *gsm, int addr)
*
* Can sleep.
*/
-static void gsm_dlci_free(struct kref *ref)
+static void gsm_dlci_free(struct tty_port *port)
{
- struct gsm_dlci *dlci = container_of(ref, struct gsm_dlci, ref);
+ struct gsm_dlci *dlci = container_of(port, struct gsm_dlci, port);
del_timer_sync(&dlci->t1);
dlci->gsm->dlci[dlci->addr] = NULL;
@@ -1683,12 +1681,12 @@ static void gsm_dlci_free(struct kref *ref)
static inline void dlci_get(struct gsm_dlci *dlci)
{
- kref_get(&dlci->ref);
+ tty_port_get(&dlci->port);
}
static inline void dlci_put(struct gsm_dlci *dlci)
{
- kref_put(&dlci->ref, gsm_dlci_free);
+ tty_port_put(&dlci->port);
}
/**
@@ -2874,6 +2872,7 @@ static void gsm_dtr_rts(struct tty_port *port, int onoff)
static const struct tty_port_operations gsm_port_ops = {
.carrier_raised = gsm_carrier_raised,
.dtr_rts = gsm_dtr_rts,
+ .destruct = gsm_dlci_free,
};
static int gsmtty_install(struct tty_driver *driver, struct tty_struct *tty)