if (cx->vbi.insert_mpeg == 0)
                return 0;
        /* Need sliced data for mpeg insertion */
-       if (get_service_set(cx->vbi.sliced_in) == 0) {
+       if (cx18_get_service_set(cx->vbi.sliced_in) == 0) {
                if (cx->is_60hz)
                        cx->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
                else
                        cx->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
-               expand_service_set(cx->vbi.sliced_in, cx->is_50hz);
+               cx18_expand_service_set(cx->vbi.sliced_in, cx->is_50hz);
        }
        return 0;
 }
 
 #include <media/v4l2-chip-ident.h>
 #include <linux/i2c-id.h>
 
-u16 service2vbi(int type)
+u16 cx18_service2vbi(int type)
 {
        switch (type) {
        case V4L2_SLICED_TELETEXT_B:
        return 0;
 }
 
-void expand_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
+void cx18_expand_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal)
 {
        u16 set = fmt->service_set;
        int f, l;
        return set != 0;
 }
 
-u16 get_service_set(struct v4l2_sliced_vbi_format *fmt)
+u16 cx18_get_service_set(struct v4l2_sliced_vbi_format *fmt)
 {
        int f, l;
        u16 set = 0;
                memset(vbifmt->service_lines, 0, sizeof(vbifmt->service_lines));
 
                cx18_av_cmd(cx, VIDIOC_G_FMT, fmt);
-               vbifmt->service_set = get_service_set(vbifmt);
+               vbifmt->service_set = cx18_get_service_set(vbifmt);
                break;
        }
        default:
        memset(vbifmt->reserved, 0, sizeof(vbifmt->reserved));
 
        if (vbifmt->service_set)
-               expand_service_set(vbifmt, cx->is_50hz);
+               cx18_expand_service_set(vbifmt, cx->is_50hz);
        set = check_service_set(vbifmt, cx->is_50hz);
-       vbifmt->service_set = get_service_set(vbifmt);
+       vbifmt->service_set = cx18_get_service_set(vbifmt);
 
        if (!set_fmt)
                return 0;
 
  *  02111-1307  USA
  */
 
-u16 service2vbi(int type);
-void expand_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal);
-u16 get_service_set(struct v4l2_sliced_vbi_format *fmt);
+u16 cx18_service2vbi(int type);
+void cx18_expand_service_set(struct v4l2_sliced_vbi_format *fmt, int is_pal);
+u16 cx18_get_service_set(struct v4l2_sliced_vbi_format *fmt);
 int cx18_v4l2_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
                    unsigned long arg);
 int cx18_v4l2_ioctls(struct cx18 *cx, struct file *filp, unsigned cmd,
 
                        linemask[0] |= (1 << l);
                else
                        linemask[1] |= (1 << (l - 32));
-               dst[sd + 12 + line * 43] = service2vbi(sdata->id);
+               dst[sd + 12 + line * 43] = cx18_service2vbi(sdata->id);
                memcpy(dst + sd + 12 + line * 43 + 1, sdata->data, 42);
                line++;
        }