diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-06-03 02:21:43 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-06-03 02:21:43 +0400 |
| commit | f309532bf3e1cc1b787403d84e3039812a7dbe50 (patch) | |
| tree | 6508ac81e94bfc137d1d9a55b973a2e0e0ac007b /drivers/tty/tty_port.c | |
| parent | 233e562eac549f4f719176bbddeb50c3f17a9c8d (diff) | |
| download | linux-f309532bf3e1cc1b787403d84e3039812a7dbe50.tar.xz | |
tty: Revert the tty locking series, it needs more work
This reverts the tty layer change to use per-tty locking, because it's
not correct yet, and fixing it will require some more deep surgery.
The main revert is d29f3ef39be4 ("tty_lock: Localise the lock"), but
there are several smaller commits that built upon it, they also get
reverted here. The list of reverted commits is:
fde86d310886 - tty: add lockdep annotations
8f6576ad476b - tty: fix ldisc lock inversion trace
d3ca8b64b97e - pty: Fix lock inversion
b1d679afd766 - tty: drop the pty lock during hangup
abcefe5fc357 - tty/amiserial: Add missing argument for tty_unlock()
fd11b42e3598 - cris: fix missing tty arg in wait_event_interruptible_tty call
d29f3ef39be4 - tty_lock: Localise the lock
The revert had a trivial conflict in the 68360serial.c staging driver
that got removed in the meantime.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/tty/tty_port.c')
| -rw-r--r-- | drivers/tty/tty_port.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c index d9cca95a5452..bf6e238146ae 100644 --- a/drivers/tty/tty_port.c +++ b/drivers/tty/tty_port.c @@ -230,7 +230,7 @@ int tty_port_block_til_ready(struct tty_port *port, /* block if port is in the process of being closed */ if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) { - wait_event_interruptible_tty(tty, port->close_wait, + wait_event_interruptible_tty(port->close_wait, !(port->flags & ASYNC_CLOSING)); if (port->flags & ASYNC_HUP_NOTIFY) return -EAGAIN; @@ -296,9 +296,9 @@ int tty_port_block_til_ready(struct tty_port *port, retval = -ERESTARTSYS; break; } - tty_unlock(tty); + tty_unlock(); schedule(); - tty_lock(tty); + tty_lock(); } finish_wait(&port->open_wait, &wait); |