r8a66597_write(r8a66597, TRCLR,
td->pipe->pipetre);
r8a66597_write(r8a66597,
- (urb->transfer_buffer_length
- + td->maxpacket - 1)
- / td->maxpacket,
+ DIV_ROUND_UP
+ (urb->transfer_buffer_length,
+ td->maxpacket),
td->pipe->pipetrn);
r8a66597_bset(r8a66597, TRENB,
td->pipe->pipetre);