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n_gsm: drop unneeded gsm_dlci->fifo field

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gsm_dlci->fifo always points to gsm_dlci->_fifo. So drop the pointer and
rename _fifo to fifo. And update all the users (add & to them).

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200219084949.28074-1-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2020-02-19 09:49:40 +01:00 committed by Greg Kroah-Hartman
parent 21680a6dcb
commit 036bca1fcc
1 changed files with 10 additions and 12 deletions
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22
drivers/tty/n_gsm.c
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@ -129,8 +129,7 @@ struct gsm_dlci {
int retries;
/* Uplink tty if active */
struct tty_port port; /* The tty bound to this DLCI if there is one */
struct kfifo *fifo; /* Queue fifo for the DLCI */
struct kfifo _fifo; /* For new fifo API porting only */
struct kfifo fifo; /* Queue fifo for the DLCI */
int adaption; /* Adaption layer in use */
int prev_adaption;
u32 modem_rx; /* Our incoming virtual modem lines */
@ -796,7 +795,7 @@ static int gsm_dlci_data_output(struct gsm_mux *gsm, struct gsm_dlci *dlci)
total_size = 0;
while (1) {
len = kfifo_len(dlci->fifo);
len = kfifo_len(&dlci->fifo);
if (len == 0)
return total_size;
@ -820,7 +819,7 @@ static int gsm_dlci_data_output(struct gsm_mux *gsm, struct gsm_dlci *dlci)
*dp++ = gsm_encode_modem(dlci);
break;
}
WARN_ON(kfifo_out_locked(dlci->fifo, dp , len, &dlci->lock) != len);
WARN_ON(kfifo_out_locked(&dlci->fifo, dp , len, &dlci->lock) != len);
__gsm_data_queue(dlci, msg);
total_size += size;
}
@ -1424,7 +1423,7 @@ static void gsm_dlci_close(struct gsm_dlci *dlci)
dlci->state = DLCI_CLOSED;
if (dlci->addr != 0) {
tty_port_tty_hangup(&dlci->port, false);
kfifo_reset(dlci->fifo);
kfifo_reset(&dlci->fifo);
} else
dlci->gsm->dead = 1;
wake_up(&dlci->gsm->event);
@ -1645,8 +1644,7 @@ static struct gsm_dlci *gsm_dlci_alloc(struct gsm_mux *gsm, int addr)
return NULL;
spin_lock_init(&dlci->lock);
mutex_init(&dlci->mutex);
dlci->fifo = &dlci->_fifo;
if (kfifo_alloc(&dlci->_fifo, 4096, GFP_KERNEL) < 0) {
if (kfifo_alloc(&dlci->fifo, 4096, GFP_KERNEL) < 0) {
kfree(dlci);
return NULL;
}
@ -1681,7 +1679,7 @@ static void gsm_dlci_free(struct tty_port *port)
del_timer_sync(&dlci->t1);
dlci->gsm->dlci[dlci->addr] = NULL;
kfifo_free(dlci->fifo);
kfifo_free(&dlci->fifo);
while ((dlci->skb = skb_dequeue(&dlci->skb_list)))
dev_kfree_skb(dlci->skb);
kfree(dlci);
@ -3030,7 +3028,7 @@ static int gsmtty_write(struct tty_struct *tty, const unsigned char *buf,
if (dlci->state == DLCI_CLOSED)
return -EINVAL;
/* Stuff the bytes into the fifo queue */
sent = kfifo_in_locked(dlci->fifo, buf, len, &dlci->lock);
sent = kfifo_in_locked(&dlci->fifo, buf, len, &dlci->lock);
/* Need to kick the channel */
gsm_dlci_data_kick(dlci);
return sent;
@ -3041,7 +3039,7 @@ static int gsmtty_write_room(struct tty_struct *tty)
struct gsm_dlci *dlci = tty->driver_data;
if (dlci->state == DLCI_CLOSED)
return -EINVAL;
return TX_SIZE - kfifo_len(dlci->fifo);
return TX_SIZE - kfifo_len(&dlci->fifo);
}
static int gsmtty_chars_in_buffer(struct tty_struct *tty)
@ -3049,7 +3047,7 @@ static int gsmtty_chars_in_buffer(struct tty_struct *tty)
struct gsm_dlci *dlci = tty->driver_data;
if (dlci->state == DLCI_CLOSED)
return -EINVAL;
return kfifo_len(dlci->fifo);
return kfifo_len(&dlci->fifo);
}
static void gsmtty_flush_buffer(struct tty_struct *tty)
@ -3061,7 +3059,7 @@ static void gsmtty_flush_buffer(struct tty_struct *tty)
then the data being transmitted can't simply be junked once
it has first hit the stack. Until then we can just blow it
away */
kfifo_reset(dlci->fifo);
kfifo_reset(&dlci->fifo);
/* Need to unhook this DLCI from the transmit queue logic */
}