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>
diff --git a/drivers/tty/nozomi.c b/drivers/tty/nozomi.c
index 941fe80..afdd773 100644
--- a/drivers/tty/nozomi.c
+++ b/drivers/tty/nozomi.c
@@ -1272,15 +1272,11 @@
exit_handler:
spin_unlock(&dc->spin_mutex);
- for (a = 0; a < NOZOMI_MAX_PORTS; a++) {
- struct tty_struct *tty;
- if (test_and_clear_bit(a, &dc->flip)) {
- tty = tty_port_tty_get(&dc->port[a].port);
- if (tty)
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
- }
+
+ for (a = 0; a < NOZOMI_MAX_PORTS; a++)
+ if (test_and_clear_bit(a, &dc->flip))
+ tty_flip_buffer_push(&dc->port[a].port);
+
return IRQ_HANDLED;
none:
spin_unlock(&dc->spin_mutex);