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Subject[PATCH] tty: vcc: Convert timers to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: sparclinux@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
---
drivers/tty/vcc.c | 20 ++++++--------------
1 file changed, 6 insertions(+), 14 deletions(-)

diff --git a/drivers/tty/vcc.c b/drivers/tty/vcc.c
index 954b190526e7..58b454c34560 100644
--- a/drivers/tty/vcc.c
+++ b/drivers/tty/vcc.c
@@ -361,17 +361,13 @@ static int vcc_ldc_read(struct vcc_port *port)
return rv;
}

-static void vcc_rx_timer(unsigned long index)
+static void vcc_rx_timer(struct timer_list *t)
{
+ struct vcc_port *port = from_timer(port, t, rx_timer);
struct vio_driver_state *vio;
- struct vcc_port *port;
unsigned long flags;
int rv;

- port = vcc_get_ne(index);
- if (!port)
- return;
-
spin_lock_irqsave(&port->lock, flags);
port->rx_timer.expires = 0;

@@ -391,18 +387,14 @@ static void vcc_rx_timer(unsigned long index)
vcc_put(port, false);
}

-static void vcc_tx_timer(unsigned long index)
+static void vcc_tx_timer(struct timer_list *t)
{
- struct vcc_port *port;
+ struct vcc_port *port = from_timer(port, t, tx_timer);
struct vio_vcc *pkt;
unsigned long flags;
int tosend = 0;
int rv;

- port = vcc_get_ne(index);
- if (!port)
- return;
-
spin_lock_irqsave(&port->lock, flags);
port->tx_timer.expires = 0;

@@ -645,8 +637,8 @@ static int vcc_probe(struct vio_dev *vdev, const struct vio_device_id *id)
if (rv)
goto free_domain;

- setup_timer(&port->rx_timer, vcc_rx_timer, port->index);
- setup_timer(&port->tx_timer, vcc_tx_timer, port->index);
+ timer_setup(&port->rx_timer, vcc_rx_timer, 0);
+ timer_setup(&port->tx_timer, vcc_tx_timer, 0);

dev_set_drvdata(&vdev->dev, port);

--
2.7.4

--
Kees Cook
Pixel Security

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