dvb: don't use flush_scheduled_work()

flush_scheduled_work() is deprecated and scheduled to be removed.

* Flush the used works directly.

* Replace the deprecated cancel_rearming_delayed_work() +
  flush_scheduled_work() -> cancel_delayed_work_sync().

* Make sure mantis->uart_work isn't running on exit.
Signed-off-by: NTejun Heo <tj@kernel.org>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: linux-media@vger.kernel.org

drivers/media/dvb/dvb-core/dvb_net.c

@@ -1329,7 +1329,8 @@ static int dvb_net_remove_if(struct dvb_net *dvbnet, unsigned long num)
 		return -EBUSY;
 
 	dvb_net_stop(net);
-	flush_scheduled_work();
+	flush_work_sync(&priv->set_multicast_list_wq);
+	flush_work_sync(&priv->restart_net_feed_wq);
 	printk("dvb_net: removed network interface %s\n", net->name);
 	unregister_netdev(net);
 	dvbnet->state[num]=0;

drivers/media/dvb/dvb-usb/dvb-usb-remote.c

@@ -299,7 +299,6 @@ int dvb_usb_remote_exit(struct dvb_usb_device *d)
 {
 	if (d->state & DVB_USB_STATE_REMOTE) {
 		cancel_delayed_work_sync(&d->rc_query_work);
-		flush_scheduled_work();
 		if (d->props.rc.mode == DVB_RC_LEGACY)
 			input_unregister_device(d->rc_input_dev);
 		else

drivers/media/dvb/mantis/mantis_evm.c

@@ -111,7 +111,7 @@ void mantis_evmgr_exit(struct mantis_ca *ca)
 	struct mantis_pci *mantis = ca->ca_priv;
 
 	dprintk(MANTIS_DEBUG, 1, "Mantis Host I/F Event manager exiting");
-	flush_scheduled_work();
+	flush_work_sync(&ca->hif_evm_work);
 	mantis_hif_exit(ca);
 	mantis_pcmcia_exit(ca);
 }

drivers/media/dvb/mantis/mantis_uart.c

@@ -182,5 +182,6 @@ void mantis_uart_exit(struct mantis_pci *mantis)
 {
 	/* disable interrupt */
 	mmwrite(mmread(MANTIS_UART_CTL) & 0xffef, MANTIS_UART_CTL);
+	flush_work_sync(&mantis->uart_work);
 }
 EXPORT_SYMBOL_GPL(mantis_uart_exit);