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| author | Johan Hovold <jhovold@gmail.com> | 2013-09-10 12:50:50 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-05 07:17:55 -0700 |
| commit | 607783ce99ce3154a5307a139d79b53003b78191 (patch) | |
| tree | d386f4a9c054154fc689d68efaa66c19c885467f /drivers/tty | |
| parent | 7c429067c4df70216638104c890bf6cfe4fdcf95 (diff) | |
| download | lwn-607783ce99ce3154a5307a139d79b53003b78191.tar.gz lwn-607783ce99ce3154a5307a139d79b53003b78191.zip | |
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.c | 3 |
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; |