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authorJohan Hovold <jhovold@gmail.com>2013-09-10 12:50:50 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-10-05 07:13:10 -0700
commit20d7e144c93a9f06224fc983cb5b248bb5bc87fb (patch)
tree4ea8b0637d8a3ee6b5fcd7b977adb103bc5b41d0 /drivers/tty
parentb0a382b5a35e306362cde912bff18a42cc00b0f5 (diff)
serial: pch_uart: fix tty-kref leak in dma-rx path
commit 19b85cfb190eb9980eaf416bff96aef4159a430e upstream. Fix tty_kref leak when tty_buffer_request room fails in dma-rx path. Note that the tty ref isn't really needed anymore, but as the leak has always been there, fixing it before removing should makes it easier to backport the fix. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/pch_uart.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 591cadb0bcc3..20e4c9446992 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -658,11 +658,12 @@ static int dma_push_rx(struct eg20t_port *priv, int size)
dev_warn(port->dev, "Rx overrun: dropping %u bytes\n",
size - room);
if (!room)
- return room;
+ goto out;
tty_insert_flip_string(tport, sg_virt(&priv->sg_rx), size);
port->icount.rx += room;
+out:
tty_kref_put(tty);
return room;