media: tvaudio: 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.
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/i2c/tvaudio.c

@@ -300,9 +300,9 @@ static int chip_cmd(struct CHIPSTATE *chip, char *name, audiocmd *cmd)
  *   if available, ...
  */
 
-static void chip_thread_wake(unsigned long data)
+static void chip_thread_wake(struct timer_list *t)
 {
-	struct CHIPSTATE *chip = (struct CHIPSTATE*)data;
+	struct CHIPSTATE *chip = from_timer(chip, t, wt);
 	wake_up_process(chip->thread);
 }
 
@@ -1995,7 +1995,7 @@ static int tvaudio_probe(struct i2c_client *client, const struct i2c_device_id *
 	v4l2_ctrl_handler_setup(&chip->hdl);
 
 	chip->thread = NULL;
-	init_timer(&chip->wt);
+	timer_setup(&chip->wt, chip_thread_wake, 0);
 	if (desc->flags & CHIP_NEED_CHECKMODE) {
 		if (!desc->getrxsubchans || !desc->setaudmode) {
 			/* This shouldn't be happen. Warn user, but keep working
@@ -2005,8 +2005,6 @@ static int tvaudio_probe(struct i2c_client *client, const struct i2c_device_id *
 			return 0;
 		}
 		/* start async thread */
-		chip->wt.function = chip_thread_wake;
-		chip->wt.data     = (unsigned long)chip;
 		chip->thread = kthread_run(chip_thread, chip, "%s",
 					   client->name);
 		if (IS_ERR(chip->thread)) {