diff options
| author | Peter Hurley <peter@hurleysoftware.com> | 2015-10-17 22:36:23 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-18 06:32:21 +0200 |
| commit | e176058f0de53c2346734e5254835e0045364001 (patch) | |
| tree | b5a4e03beb2a24c03ca5023599f045cc5375828a /drivers | |
| parent | tty: Prevent tty teardown during tty_write_message() (diff) | |
| download | linux-e176058f0de53c2346734e5254835e0045364001.tar.xz linux-e176058f0de53c2346734e5254835e0045364001.zip | |
tty: Abstract tty buffer work
Introduce API functions to restart and cancel tty buffer work, rather
than manipulate buffer work directly.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/n_tty.c | 2 | ||||
| -rw-r--r-- | drivers/tty/tty_buffer.c | 10 | ||||
| -rw-r--r-- | drivers/tty/tty_io.c | 2 | ||||
| -rw-r--r-- | drivers/tty/tty_port.c | 2 |
4 files changed, 13 insertions, 3 deletions
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index fb8ccbfdbb30..13844261cd5f 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -201,7 +201,7 @@ static void n_tty_kick_worker(struct tty_struct *tty) */ WARN_RATELIMIT(test_bit(TTY_LDISC_HALTED, &tty->flags), "scheduling buffer work for halted ldisc\n"); - queue_work(system_unbound_wq, &tty->port->buf.work); + tty_buffer_restart_work(tty->port); } } diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index a660ab181cca..7cc16db37e0e 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -587,3 +587,13 @@ void tty_buffer_set_lock_subclass(struct tty_port *port) { lockdep_set_subclass(&port->buf.lock, TTY_LOCK_SLAVE); } + +bool tty_buffer_restart_work(struct tty_port *port) +{ + return queue_work(system_unbound_wq, &port->buf.work); +} + +bool tty_buffer_cancel_work(struct tty_port *port) +{ + return cancel_work_sync(&port->buf.work); +} diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 173fdeba0987..0c41dbcb90b8 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -1689,7 +1689,7 @@ static void release_tty(struct tty_struct *tty, int idx) tty->port->itty = NULL; if (tty->link) tty->link->port->itty = NULL; - cancel_work_sync(&tty->port->buf.work); + tty_buffer_cancel_work(tty->port); tty_kref_put(tty->link); tty_kref_put(tty); diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c index e04a8cfb16f7..482f33f20043 100644 --- a/drivers/tty/tty_port.c +++ b/drivers/tty/tty_port.c @@ -130,7 +130,7 @@ EXPORT_SYMBOL(tty_port_free_xmit_buf); */ void tty_port_destroy(struct tty_port *port) { - cancel_work_sync(&port->buf.work); + tty_buffer_cancel_work(port); tty_buffer_free_all(port); } EXPORT_SYMBOL(tty_port_destroy); |