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authorJiri Slaby <jslaby@suse.cz>2012-06-04 13:35:25 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-06-12 15:50:24 -0700
commitc0e7865003ae9929f32bcb7277f591115fa242b7 (patch)
treea421df435f0a46a33dd89401f6a85c30c2a4c701 /net/irda/ircomm/ircomm_tty.c
parenta1e844036af9cb0d87e878a4f90ce64713c76e5a (diff)
downloadlinux-c0e7865003ae9929f32bcb7277f591115fa242b7.tar.gz
TTY: ircomm, use tty_port_close_start helper
Again, the code is identical, so leverage the helper code. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Samuel Ortiz <samuel@sortiz.org> Cc: netdev@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/irda/ircomm/ircomm_tty.c')
-rw-r--r--net/irda/ircomm/ircomm_tty.c48
1 files changed, 1 insertions, 47 deletions
diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
index cfe352dfb48..4e35b45c1c7 100644
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -509,64 +509,18 @@ static void ircomm_tty_close(struct tty_struct *tty, struct file *filp)
{
struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data;
struct tty_port *port = &self->port;
- unsigned long flags;
IRDA_DEBUG(0, "%s()\n", __func__ );
IRDA_ASSERT(self != NULL, return;);
IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;);
- spin_lock_irqsave(&port->lock, flags);
-
- if (tty_hung_up_p(filp)) {
- spin_unlock_irqrestore(&port->lock, flags);
-
- IRDA_DEBUG(0, "%s(), returning 1\n", __func__ );
- return;
- }
-
- if ((tty->count == 1) && (port->count != 1)) {
- /*
- * Uh, oh. tty->count is 1, which means that the tty
- * structure will be freed. state->count should always
- * be one in these conditions. If it's greater than
- * one, we've got real problems, since it means the
- * serial port won't be shutdown.
- */
- IRDA_DEBUG(0, "%s(), bad serial port count; "
- "tty->count is 1, state->count is %d\n", __func__ ,
- port->count);
- port->count = 1;
- }
-
- if (--port->count < 0) {
- IRDA_ERROR("%s(), bad serial port count for ttys%d: %d\n",
- __func__, self->line, port->count);
- port->count = 0;
- }
- if (port->count) {
- spin_unlock_irqrestore(&port->lock, flags);
-
- IRDA_DEBUG(0, "%s(), open count > 0\n", __func__ );
+ if (tty_port_close_start(port, tty, filp) == 0)
return;
- }
-
- set_bit(ASYNCB_CLOSING, &port->flags);
-
- spin_unlock_irqrestore(&port->lock, flags);
-
- /*
- * Now we wait for the transmit buffer to clear; and we notify
- * the line discipline to only process XON/XOFF characters.
- */
- tty->closing = 1;
- if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent_from_close(tty, port->closing_wait);
ircomm_tty_shutdown(self);
tty_driver_flush_buffer(tty);
- tty_ldisc_flush(tty);
tty_port_close_end(port, tty);
tty_port_tty_set(port, NULL);