+#ifdef CONFIG_MTK_XHCI
+static u32 xhci_td_remainder(unsigned int td_transfer_size, unsigned int td_running_total
+ , unsigned int maxp, unsigned trb_buffer_length)
+{
+ u32 max = 31;
+ int remainder, td_packet_count, packet_transferred;
+
+ //0 for the last TRB
+ //FIXME: need to workaround if there is ZLP in this TD
+ if (td_running_total + trb_buffer_length == td_transfer_size)
+ return 0;
+
+ //FIXME: need to take care of high-bandwidth (MAX_ESIT)
+ packet_transferred = (td_running_total /*+ trb_buffer_length*/) / maxp;
+ td_packet_count = DIV_ROUND_UP(td_transfer_size, maxp);
+ remainder = td_packet_count - packet_transferred;
+
+ if (remainder > max)
+ return max << 17;
+ else
+ return remainder << 17;
+}
+#else