3.11-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <jhov...@gmail.com>
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 <jhov...@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/tty/serial/pch_uart.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- 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
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;
--
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