tty: fix chars_in_buffers

This function does not have an error return and returning an error is
instead interpreted as having a lot of pending bytes.

Reported by Jeff Harris who provided a list of some of the remaining
offenders.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c
index 94e7e3c8c05a..d97779ef72cb 100644
--- a/drivers/char/hvc_console.c
+++ b/drivers/char/hvc_console.c
@@ -552,7 +552,7 @@ static int hvc_chars_in_buffer(struct tty_struct *tty)
         struct hvc_struct *hp = tty->driver_data;
 
         if (!hp)
-                return -1;
+                return 0;
         return hp->n_outbuf;
 }