Commit fc098af1 authored Jun 04, 2017 by Greg Kroah-Hartman

Revert "tty: fix port buffer locking"



This reverts commit 925bb1ce.

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

Reported-by:  <valdis.kletnieks@vt.edu>
Reported-by: Russell King <linux@armlinux.org.uk>
Reported-by: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reported-by: Jiri Slaby <jslaby@suse.cz>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 5ed02dbb

drivers/tty/tty_port.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -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);