100 	size_t buf_len;  member
190 				 dev->buf_len, dma->direction);  in at91_twi_dma_cleanup()
199 	if (dev->buf_len <= 0)  in at91_twi_write_next_byte()
205 	if (--dev->buf_len == 0)  in at91_twi_write_next_byte()
208 	dev_dbg(dev->dev, "wrote 0x%x, to go %d\n", *dev->buf, dev->buf_len);  in at91_twi_write_next_byte()
218 			 dev->buf_len, DMA_TO_DEVICE);  in at91_twi_write_data_dma_callback()
238 	if (dev->buf_len <= 0)  in at91_twi_write_data_dma()
244 	dma_addr = dma_map_single(dev->dev, dev->buf, dev->buf_len,  in at91_twi_write_data_dma()
252 	sg_dma_len(&dma->sg) = dev->buf_len;  in at91_twi_write_data_dma()
277 	if (dev->buf_len <= 0)  in at91_twi_read_next_byte()
281 	--dev->buf_len;  in at91_twi_read_next_byte()
292 			dev->buf_len += *dev->buf;  in at91_twi_read_next_byte()
293 			dev->msg->len = dev->buf_len + 1;  in at91_twi_read_next_byte()
295 					 dev->buf_len);  in at91_twi_read_next_byte()
299 			dev->buf_len = 1;  in at91_twi_read_next_byte()
304 	if (dev->buf_len == 1)  in at91_twi_read_next_byte()
307 	dev_dbg(dev->dev, "read 0x%x, to go %d\n", *dev->buf, dev->buf_len);  in at91_twi_read_next_byte()
317 			 dev->buf_len, DMA_FROM_DEVICE);  in at91_twi_read_data_dma_callback()
320 	dev->buf += dev->buf_len - 2;  in at91_twi_read_data_dma_callback()
321 	dev->buf_len = 2;  in at91_twi_read_data_dma_callback()
336 	dma_addr = dma_map_single(dev->dev, dev->buf, dev->buf_len - 2,  in at91_twi_read_data_dma()
345 	sg_dma_len(&dma->sg) = dev->buf_len - 2;  in at91_twi_read_data_dma()
426 		(dev->msg->flags & I2C_M_RD) ? "read" : "write", dev->buf_len);  in at91_do_twi_transfer()
431 	if (!dev->buf_len) {  in at91_do_twi_transfer()
443 		if (dev->buf_len <= 1 && !(dev->msg->flags & I2C_M_RECV_LEN))  in at91_do_twi_transfer()
454 		if (dev->use_dma && (dev->buf_len > AT91_I2C_DMA_THRESHOLD)) {  in at91_do_twi_transfer()
464 		if (dev->use_dma && (dev->buf_len > AT91_I2C_DMA_THRESHOLD)) {  in at91_do_twi_transfer()
545 	dev->buf_len = m_start->len;  in at91_twi_xfer()