diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2016-04-09 17:53:22 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-30 09:26:55 -0700 |
| commit | 807c8d81f4ec441241cafa3034c58df721fee869 (patch) | |
| tree | 83402ad7f36b135d15d1aa6686ff26aa186b3dec /drivers/tty/amiserial.c | |
| parent | 5604a98e2f95d6221852960a3363588f40d78e22 (diff) | |
tty: Replace ASYNC_NORMAL_ACTIVE bit and update atomically
Replace ASYNC_NORMAL_ACTIVE bit in the tty_port::flags field with
TTY_PORT_ACTIVE bit in the tty_port::iflags field. Introduce helpers
tty_port_set_active() and tty_port_active() to abstract atomic bit ops.
Extract state changes from port lock sections, as this usage is
broken and confused; the state transitions are protected by the
tty lock (which mutually excludes parallel open/close/hangup),
and no user tests the active state while holding the port lock.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/amiserial.c')
| -rw-r--r-- | drivers/tty/amiserial.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c index 92717b088959..80d61658efb0 100644 --- a/drivers/tty/amiserial.c +++ b/drivers/tty/amiserial.c @@ -1493,7 +1493,7 @@ static void rs_hangup(struct tty_struct *tty) rs_flush_buffer(tty); shutdown(tty, info); info->tport.count = 0; - info->tport.flags &= ~ASYNC_NORMAL_ACTIVE; + tty_port_set_active(&info->tport, 0); info->tport.tty = NULL; wake_up_interruptible(&info->tport.open_wait); } |