[patch 4/3] tty: make tty_kopen return ENODEV in case of no TTY

[Okash Khawaja]

When TTY is not built, tty_kopen should return an error. This way
calling code remains consistent, regardless of whether tty is built or
not. This patch returns -ENODEV when there is no tty.

Signed-off-by: Okash Khawaja <okash.khawaja at gmail.com>

---
 include/linux/tty.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -423,7 +423,7 @@ static inline int __init tty_init(void)
 static inline const char *tty_name(const struct tty_struct *tty)
 { return "(none)"; }
 static inline struct tty_struct *tty_kopen(dev_t device)
-{ return NULL; }
+{ return ERR_PTR(-ENODEV); }
 static inline int tty_dev_name_to_number(const char *name, dev_t *number)
 { return -ENOTSUPP; }
 #endif