diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ipack/devices/ipoctal.c | 21 |
1 files changed, 2 insertions, 19 deletions
diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c index a33a849765c6..8d0a86631908 100644 --- a/drivers/ipack/devices/ipoctal.c +++ b/drivers/ipack/devices/ipoctal.c @@ -38,7 +38,6 @@ struct ipoctal_channel { spinlock_t lock; unsigned int pointer_read; unsigned int pointer_write; - atomic_t open; struct tty_port tty_port; union scc2698_channel __iomem *regs; union scc2698_block __iomem *block_regs; @@ -70,22 +69,12 @@ static int ipoctal_port_activate(struct tty_port *port, struct tty_struct *tty) static int ipoctal_open(struct tty_struct *tty, struct file *file) { - int res; struct ipoctal_channel *channel; channel = dev_get_drvdata(tty->dev); - - if (atomic_read(&channel->open)) - return -EBUSY; - tty->driver_data = channel; - res = tty_port_open(&channel->tty_port, tty, file); - if (res) - return res; - - atomic_inc(&channel->open); - return 0; + return tty_port_open(&channel->tty_port, tty, file); } static void ipoctal_reset_stats(struct ipoctal_stats *stats) @@ -111,9 +100,7 @@ static void ipoctal_close(struct tty_struct *tty, struct file *filp) struct ipoctal_channel *channel = tty->driver_data; tty_port_close(&channel->tty_port, tty, filp); - - if (atomic_dec_and_test(&channel->open)) - ipoctal_free_channel(channel); + ipoctal_free_channel(channel); } static int ipoctal_get_icount(struct tty_struct *tty, @@ -205,10 +192,6 @@ static void ipoctal_irq_channel(struct ipoctal_channel *channel) u8 isr, sr; struct tty_struct *tty; - /* If there is no client, skip the check */ - if (!atomic_read(&channel->open)) - return; - tty = tty_port_tty_get(&channel->tty_port); if (!tty) return; |