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authorJiri Slaby <jirislaby@gmail.com>2009-06-11 17:33:37 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-11 19:51:07 +0400
commit3e3b5c087799e536871c8261b05bc28e4783c8da (patch)
treefc8841b45f3326c79eda03c0d98e8a11c5125938 /drivers
parent5fc5b42a3bb564f0b6e03f0f1b522ed9100250ad (diff)
downloadlinux-3e3b5c087799e536871c8261b05bc28e4783c8da.tar.xz
tty: use prepare/finish_wait
Use prepare_to_wait and finish_wait instead of add_wait_queue and remove_wait_queue. This avoids us setting a task state. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/char/tty_port.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c
index 931af1030740..62dadfc95e34 100644
--- a/drivers/char/tty_port.c
+++ b/drivers/char/tty_port.c
@@ -222,7 +222,6 @@ int tty_port_block_til_ready(struct tty_port *port,
before the next open may complete */
retval = 0;
- add_wait_queue(&port->open_wait, &wait);
/* The port lock protects the port counts */
spin_lock_irqsave(&port->lock, flags);
@@ -236,7 +235,7 @@ int tty_port_block_til_ready(struct tty_port *port,
if (tty->termios->c_cflag & CBAUD)
tty_port_raise_dtr_rts(port);
- set_current_state(TASK_INTERRUPTIBLE);
+ prepare_to_wait(&port->open_wait, &wait, TASK_INTERRUPTIBLE);
/* Check for a hangup or uninitialised port. Return accordingly */
if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
if (port->flags & ASYNC_HUP_NOTIFY)
@@ -257,8 +256,7 @@ int tty_port_block_til_ready(struct tty_port *port,
}
schedule();
}
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&port->open_wait, &wait);
+ finish_wait(&port->open_wait, &wait);
/* Update counts. A parallel hangup will have set count to zero and
we must not mess that up further */