From: Michal Ostrowski <mostrows@watson.ibm.com>

If bailing out because there is nothing to receive in rp_do_receive(),
tty_ldisc_deref is not called.  Failure to do so increases the ref count=20
and causes release_dev() to hang since it can't get the ref count to 0.

Signed-off-by: Michal Ostrowski <mostrows@watson.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 drivers/char/rocket.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletion(-)

diff -puN drivers/char/rocket.c~rocketc-fix-ldisc-ref-count-handling drivers/char/rocket.c
--- devel/drivers/char/rocket.c~rocketc-fix-ldisc-ref-count-handling	2005-07-14 16:44:57.000000000 -0700
+++ devel-akpm/drivers/char/rocket.c	2005-07-14 16:45:34.000000000 -0700
@@ -355,7 +355,7 @@ static void rp_do_receive(struct r_port 
 		ToRecv = space;
 
 	if (ToRecv <= 0)
-		return;
+		goto done;
 
 	/*
 	 * if status indicates there are errored characters in the
@@ -437,6 +437,7 @@ static void rp_do_receive(struct r_port 
 	}
 	/*  Push the data up to the tty layer */
 	ld->receive_buf(tty, tty->flip.char_buf, tty->flip.flag_buf, count);
+done:
 	tty_ldisc_deref(ld);
 }
 
_