[PATCH] vt: keyboard, fix uninitialized variables warning

[Li Wang]

drivers/tty/vt/keyboard.c: In function 'vt_do_kdgkb_ioctl':
drivers/tty/vt/keyboard.c: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
  return ret;
         ^~~
kernel-source/drivers/tty/vt/keyboard.c: warning: 'kbs' may be used uninitialized in this function [-Wmaybe-uninitialized]
  kfree(kbs);
  ^~~~~~~~~~

Signed-off-by: Li Wang <li.wang@xxxxxxxxxxxxx>
---
 drivers/tty/vt/keyboard.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index 7763862..3e73d55 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -2049,8 +2049,8 @@ int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
 {
 	unsigned char kb_func;
 	unsigned long flags;
-	char *kbs;
-	int ret;
+	char *kbs = NULL;
+	int ret = -EINVAL;
 
 	if (get_user(kb_func, &user_kdgkb->kb_func))
 		return -EFAULT;
-- 
2.7.4