media: staging: media: av7110: replace BUG_ON by WARN_ON

No need for BUG_ON, WARN_ON is a lot friendlier.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/staging/media/av7110/av7110.c

@@ -1106,9 +1106,11 @@ static int dvb_get_stc(struct dmx_demux *demux, unsigned int num,
 	struct av7110 *av7110;
 
 	/* pointer casting paranoia... */
-	BUG_ON(!demux);
+	if (WARN_ON(!demux))
+		return -EIO;
 	dvbdemux = demux->priv;
-	BUG_ON(!dvbdemux);
+	if (WARN_ON(!dvbdemux))
+		return -EIO;
 	av7110 = dvbdemux->priv;
 
 	dprintk(4, "%p\n", av7110);

drivers/staging/media/av7110/av7110_hw.c

@@ -1007,7 +1007,8 @@ static int OSDSetBlock(struct av7110 *av7110, int x0, int y0,
 
 	if (av7110->bmp_state == BMP_LOADING) {
 		/* possible if syscall is repeated by -ERESTARTSYS and if firmware cannot abort */
-		BUG_ON (FW_VERSION(av7110->arm_app) >= 0x261e);
+		if (WARN_ON(FW_VERSION(av7110->arm_app) >= 0x261e))
+			return -EIO;
 		rc = WaitUntilBmpLoaded(av7110);
 		if (rc)
 			return rc;