From 86c0ae7cde7a8699116b365a5e3016753f0cd92a Mon Sep 17 00:00:00 2001
From: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Date: Thu, 16 Jun 2016 22:04:35 +0200
Subject: [PATCH] ASoC: cx20442: set tty->receiver_room in v253_open
Commit 79901317ce80 ("n_tty: Don't flush buffer when closing ldisc"),
introduced in v3.10, revealed a bug in the cx20442 codec driver
which has never been setting tty->receive_room on line discipline
open as it should from the beginning. Fix it.
Created and tested on Amstrad Delta against Linux-4.7-rc3
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
sound/soc/codecs/cx20442.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/sound/soc/codecs/cx20442.c b/sound/soc/codecs/cx20442.c
index d6f4abbbf8a7..fb3885fe0afb 100644
--- a/sound/soc/codecs/cx20442.c
+++ b/sound/soc/codecs/cx20442.c
@@ -226,6 +226,7 @@ static int v253_open(struct tty_struct *tty)
if (!tty->disc_data)
return -ENODEV;
+ tty->receive_room = 16;
if (tty->ops->write(tty, v253_init, len) != len) {
ret = -EIO;
goto err;