Revert "tty: fix port buffer locking"

This reverts commit 925bb1ce47f429f69aad35876df7ecd8c53deb7e.

It causes lots of warnings and problems so for now, let's just revert
it.

Reported-by: <[email protected]>
Reported-by: Russell King <[email protected]>
Reported-by: Sergey Senozhatsky <[email protected]>
Reported-by: Geert Uytterhoeven <[email protected]>
Reported-by: Jiri Slaby <[email protected]>
Reported-by: Andrey Konovalov <[email protected]>
Acked-by: Vegard Nossum <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 4fb3165384c4495bb83a785dc564f76be68e340a..6b137194069fee47bc45b1866865ee27adfd33c5 100644 (file)
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -34,9 +34,7 @@ static int tty_port_default_receive_buf(struct tty_port *port,
        if (!disc)
                return 0;
 
-       mutex_lock(&tty->atomic_write_lock);
        ret = tty_ldisc_receive_buf(disc, p, (char *)f, count);
-       mutex_unlock(&tty->atomic_write_lock);
 
        tty_ldisc_deref(disc);