diff options
| author |   Jiri Slaby <jslaby@suse.cz> | 2013-01-03 15:53:06 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-15 22:30:15 -0800 |
| commit | 2e124b4a390ca85325fae75764bef92f0547fa25 (patch) | |
| tree | 5519fbcdbe954e79b271ea6d31ac5a4dc754c4f5 /drivers/tty/serial/kgdb_nmi.c | |
| parent | TTY: move low_latency to tty_port (diff) | |
| download | linux-dev-2e124b4a390ca85325fae75764bef92f0547fa25.tar.xz linux-dev-2e124b4a390ca85325fae75764bef92f0547fa25.zip | |
TTY: switch tty_flip_buffer_push
Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.
Now, the one where most of tty_port_tty_get gets removed:
tty_flip_buffer_push.
IOW we also closed all the races in drivers not using tty_port_tty_get
at all yet.
Also we move tty_flip_buffer_push declaration from include/linux/tty.h
to include/linux/tty_flip.h to all others while we are changing it
anyway.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/kgdb_nmi.c')
| -rw-r--r-- | drivers/tty/serial/kgdb_nmi.c | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/drivers/tty/serial/kgdb_nmi.c b/drivers/tty/serial/kgdb_nmi.c index ba2ef627d9c6..26a50b0c868b 100644 --- a/drivers/tty/serial/kgdb_nmi.c +++ b/drivers/tty/serial/kgdb_nmi.c @@ -202,7 +202,6 @@ bool kgdb_nmi_poll_knock(void) static void kgdb_nmi_tty_receiver(unsigned long data) { struct kgdb_nmi_tty_priv *priv = (void *)data; - struct tty_struct *tty; char ch; tasklet_schedule(&priv->tlet); @@ -210,16 +209,9 @@ static void kgdb_nmi_tty_receiver(unsigned long data) if (likely(!kgdb_nmi_tty_enabled || !kfifo_len(&priv->fifo))) return; - /* Port is there, but tty might be hung up, check. */ - tty = tty_port_tty_get(kgdb_nmi_port); - if (!tty) - return; - while (kfifo_out(&priv->fifo, &ch, 1)) tty_insert_flip_char(&priv->port, ch, TTY_NORMAL); - tty_flip_buffer_push(priv->port.tty); - - tty_kref_put(tty); + tty_flip_buffer_push(&priv->port); } static int kgdb_nmi_tty_activate(struct tty_port *port, struct tty_struct *tty) |