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| author | Eric Biggers <ebiggers@google.com> | 2020-02-24 08:33:59 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-18 13:08:45 +0100 |
| commit | ed069827ca70af057caf21c395f76c2c0b82d429 (patch) | |
| tree | 700029c40a5a87026560e80b50761661f44c3131 | |
| parent | Linux 5.6-rc5 (diff) | |
| download | linux-ed069827ca70af057caf21c395f76c2c0b82d429.tar.xz linux-ed069827ca70af057caf21c395f76c2c0b82d429.zip | |
tty: drop outdated comments about release_tty() locking
The current version of the TTY code unlocks the tty_struct(s) before
release_tty() rather than after. Moreover, tty_unlock_pair() no longer
exists. Thus, remove the outdated comments regarding tty_unlock_pair().
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20200224073359.292795-1-ebiggers@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/tty_io.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index a1453fe10862..1fcf7ad83dfa 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -1589,9 +1589,7 @@ void tty_kclose(struct tty_struct *tty) tty_debug_hangup(tty, "freeing structure\n"); /* * The release_tty function takes care of the details of clearing - * the slots and preserving the termios structure. The tty_unlock_pair - * should be safe as we keep a kref while the tty is locked (so the - * unlock never unlocks a freed tty). + * the slots and preserving the termios structure. */ mutex_lock(&tty_mutex); tty_port_set_kopened(tty->port, 0); @@ -1621,9 +1619,7 @@ void tty_release_struct(struct tty_struct *tty, int idx) tty_debug_hangup(tty, "freeing structure\n"); /* * The release_tty function takes care of the details of clearing - * the slots and preserving the termios structure. The tty_unlock_pair - * should be safe as we keep a kref while the tty is locked (so the - * unlock never unlocks a freed tty). + * the slots and preserving the termios structure. */ mutex_lock(&tty_mutex); release_tty(tty, idx); |