__func__, sarb->len, vcc);
                /* discard cells already received */
                skb_trim(sarb, 0);
-               UDSL_ASSERT(instance, sarb->tail + ATM_CELL_PAYLOAD <= sarb->end);
        }
 
        memcpy(skb_tail_pointer(sarb), source + ATM_CELL_HEADER, ATM_CELL_PAYLOAD);
                unsigned char *cell_buf = instance->cell_buf;
                unsigned int space_left = stride - buf_usage;
 
-               UDSL_ASSERT(instance, buf_usage <= stride);
-
                if (avail_data >= space_left) {
                        /* add new data and process cell */
                        memcpy(cell_buf + buf_usage, source, space_left);
 
        vdbg(&instance->usb_intf->dev, "%s: skb->len=%d, avail_space=%u",
             __func__, skb->len, avail_space);
-       UDSL_ASSERT(instance, !(avail_space % stride));
 
        for (bytes_written = 0; bytes_written < avail_space && ctrl->len;
             bytes_written += stride, target += stride) {
                                if (!urb->iso_frame_desc[i].status) {
                                        unsigned int actual_length = urb->iso_frame_desc[i].actual_length;
 
-                                       UDSL_ASSERT(instance, actual_length <= packet_size);
-
                                        if (!merge_length)
                                                merge_start = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset;
                                        merge_length += actual_length;
                struct urb *urb;
                unsigned int iso_packets = usb_pipeisoc(channel->endpoint) ? channel->buf_size / channel->packet_size : 0;
 
-               UDSL_ASSERT(instance, !usb_pipeisoc(channel->endpoint) || usb_pipein(channel->endpoint));
-
                urb = usb_alloc_urb(iso_packets, GFP_KERNEL);
                if (!urb) {
                        dev_err(dev, "%s: no memory for urb %d!\n", __func__, i);
 
 #define VERBOSE_DEBUG
 */
 
-#ifdef DEBUG
-#define UDSL_ASSERT(instance, x)       BUG_ON(!(x))
-#else
-#define UDSL_ASSERT(instance, x)                                       \
-       do {    \
-               if (!(x))                                               \
-                       dev_warn(&(instance)->usb_intf->dev,            \
-                                "failed assertion '%s' at line %d",    \
-                                __stringify(x), __LINE__);             \
-       } while (0)
-#endif
-
 #define usb_err(instance, format, arg...)      \
        dev_err(&(instance)->usb_intf->dev , format , ## arg)
 #define usb_info(instance, format, arg...)     \