TTY: tty_io, annotate locking functions
tty_write_lock and tty_write_unlock contain imbalanced locking. But
this is intentional, so mark them appropriately by
__acquires/__releases.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 3f4ad98..6556f74 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -962,12 +962,14 @@
}
void tty_write_unlock(struct tty_struct *tty)
+ __releases(&tty->atomic_write_lock)
{
mutex_unlock(&tty->atomic_write_lock);
wake_up_interruptible_poll(&tty->write_wait, POLLOUT);
}
int tty_write_lock(struct tty_struct *tty, int ndelay)
+ __acquires(&tty->atomic_write_lock)
{
if (!mutex_trylock(&tty->atomic_write_lock)) {
if (ndelay)