From: Jiri Slaby <jirislaby@gmail.com>
Date: Mon, 22 Jun 2009 17:42:18 +0000 (+0100)
Subject: vt_ioctl: fix lock imbalance
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a115902f67ef51fbbe83e214fb761aaa9734c1ce;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

vt_ioctl: fix lock imbalance

Don't return from switch/case directly in vt_ioctl. Set ret and break
instead so that we unlock BKL.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c
index e6ce632a393e..7539bed0f7e0 100644
--- a/drivers/char/vt_ioctl.c
+++ b/drivers/char/vt_ioctl.c
@@ -396,7 +396,8 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
 	kbd = kbd_table + console;
 	switch (cmd) {
 	case TIOCLINUX:
-		return tioclinux(tty, arg);
+		ret = tioclinux(tty, arg);
+		break;
 	case KIOCSOUND:
 		if (!perm)
 			goto eperm;