if (!dev->use_alt_cmd)
                        at91_twi_write(dev, AT91_TWI_CR, AT91_TWI_STOP);
 
-       dev_dbg(dev->dev, "wrote 0x%x, to go %d\n", *dev->buf, dev->buf_len);
+       dev_dbg(dev->dev, "wrote 0x%x, to go %zu\n", *dev->buf, dev->buf_len);
 
        ++dev->buf;
 }
                        dev->msg->flags &= ~I2C_M_RECV_LEN;
                        dev->buf_len += *dev->buf;
                        dev->msg->len = dev->buf_len + 1;
-                       dev_dbg(dev->dev, "received block length %d\n",
+                       dev_dbg(dev->dev, "received block length %zu\n",
                                         dev->buf_len);
                } else {
                        /* abort and send the stop by reading one more byte */
        if (!dev->use_alt_cmd && dev->buf_len == 1)
                at91_twi_write(dev, AT91_TWI_CR, AT91_TWI_STOP);
 
-       dev_dbg(dev->dev, "read 0x%x, to go %d\n", *dev->buf, dev->buf_len);
+       dev_dbg(dev->dev, "read 0x%x, to go %zu\n", *dev->buf, dev->buf_len);
 
        ++dev->buf;
 }
         * writing the corresponding bit into the Control Register.
         */
 
-       dev_dbg(dev->dev, "transfer: %s %d bytes.\n",
+       dev_dbg(dev->dev, "transfer: %s %zu bytes.\n",
                (dev->msg->flags & I2C_M_RD) ? "read" : "write", dev->buf_len);
 
        reinit_completion(&dev->cmd_complete);