3.2.52-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Johan Hovold <[email protected]>

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 <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <[email protected]>
---
 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
@@ -552,11 +552,12 @@ 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(tty, sg_virt(&priv->sg_rx), size);
 
        port->icount.rx += room;
+out:
        tty_kref_put(tty);
 
        return room;

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