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/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index bfc5ce000ef9..ccd4dd340d2c 100644
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -521,7 +521,7 @@ static int mos7720_chars_in_buffer(struct tty_struct *tty)
         mos7720_port = usb_get_serial_port_data(port);
         if (mos7720_port == NULL) {
                 dbg("%s:leaving ...........", __func__);
-                return -ENODEV;
+                return 0;
         }
 
         for (i = 0; i < NUM_URBS; ++i) {