wireless: zydas: convert tasklets to use new tasklet_setup() API

In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly
and remove .data fieldd

Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <allen.lkml@gmail.com>

drivers/net/wireless/zydas/zd1211rw/zd_usb.c

@@ -1140,9 +1140,9 @@ static void zd_rx_idle_timer_handler(struct work_struct *work)
 	zd_usb_reset_rx(usb);
 }
 
-static void zd_usb_reset_rx_idle_timer_tasklet(unsigned long param)
+static void zd_usb_reset_rx_idle_timer_tasklet(struct tasklet_struct *t)
 {
-	struct zd_usb *usb = (struct zd_usb *)param;
+	struct zd_usb *usb = from_tasklet(usb, t, rx.reset_timer_tasklet);
 
 	zd_usb_reset_rx_idle_timer(usb);
 }
@@ -1178,8 +1178,8 @@ static inline void init_usb_rx(struct zd_usb *usb)
 	}
 	ZD_ASSERT(rx->fragment_length == 0);
 	INIT_DELAYED_WORK(&rx->idle_work, zd_rx_idle_timer_handler);
-	rx->reset_timer_tasklet.func = zd_usb_reset_rx_idle_timer_tasklet;
-	rx->reset_timer_tasklet.data = (unsigned long)usb;
+	rx->reset_timer_tasklet.func = (void (*)(unsigned long))
+					zd_usb_reset_rx_idle_timer_tasklet;
 }
 
 static inline void init_usb_tx(struct zd_usb *usb)