[PATCH] USB: serial: garmin_gps: Convert timers to use timer_setup()

From: Kees Cook
Date: Tue Oct 10 2017 - 14:25:31 EST


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: Johan Hovold <johan@xxxxxxxxxx>
Cc: Allen Pais <allen.lkml@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: linux-usb@xxxxxxxxxxxxxxx
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
drivers/usb/serial/garmin_gps.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c
index b2f2e87aed94..9ade4ff0edd7 100644
--- a/drivers/usb/serial/garmin_gps.c
+++ b/drivers/usb/serial/garmin_gps.c
@@ -1370,9 +1370,10 @@ static void garmin_unthrottle(struct tty_struct *tty)
* the tty in cases where the protocol provides no own handshaking
* to initiate the transfer.
*/
-static void timeout_handler(unsigned long data)
+static void timeout_handler(struct timer_list *t)
{
- struct garmin_data *garmin_data_p = (struct garmin_data *) data;
+ struct garmin_data *garmin_data_p = from_timer(garmin_data_p, t,
+ timer);

/* send the next queued packet to the tty port */
if (garmin_data_p->mode == MODE_NATIVE)
@@ -1391,12 +1392,10 @@ static int garmin_port_probe(struct usb_serial_port *port)
if (!garmin_data_p)
return -ENOMEM;

- init_timer(&garmin_data_p->timer);
+ timer_setup(&garmin_data_p->timer, timeout_handler, 0);
spin_lock_init(&garmin_data_p->lock);
INIT_LIST_HEAD(&garmin_data_p->pktlist);
/* garmin_data_p->timer.expires = jiffies + session_timeout; */
- garmin_data_p->timer.data = (unsigned long)garmin_data_p;
- garmin_data_p->timer.function = timeout_handler;
garmin_data_p->port = port;
garmin_data_p->state = 0;
garmin_data_p->flags = 0;
--
2.7.4


--
Kees Cook
Pixel Security