[media] bttv: do not unmute the device before the first open

Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/pci/bt8xx/bttv-driver.c

@@ -4212,11 +4212,13 @@ static int bttv_probe(struct pci_dev *dev, const struct pci_device_id *pci_id)
 	btv->std = V4L2_STD_PAL;
 	init_irqreg(btv);
 	v4l2_ctrl_handler_setup(hdl);
-
 	if (hdl->error) {
 		result = hdl->error;
 		goto fail2;
 	}
+	/* mute device */
+	audio_mute(btv, 1);
+
 	/* register video4linux + input */
 	if (!bttv_tvcards[btv->c.type].no_video) {
 		v4l2_ctrl_add_handler(&btv->radio_ctrl_handler, hdl,