402 	int new_z2, fcnt, maxlen;  in hfcpci_empty_fifo_trans()  local
409 	if (!(fcnt = *z1r - *z2r))  in hfcpci_empty_fifo_trans()
412 	if (fcnt <= 0)  in hfcpci_empty_fifo_trans()
413 		fcnt += B_FIFO_SIZE;	/* bytes actually buffered */  in hfcpci_empty_fifo_trans()
414 	if (fcnt > HFCPCI_BTRANS_THRESHOLD)  in hfcpci_empty_fifo_trans()
415 		fcnt = HFCPCI_BTRANS_THRESHOLD;		/* limit size */  in hfcpci_empty_fifo_trans()
417 	new_z2 = *z2r + fcnt;	/* new position in fifo */  in hfcpci_empty_fifo_trans()
421 	if (!(skb = dev_alloc_skb(fcnt)))  in hfcpci_empty_fifo_trans()
424 		ptr = skb_put(skb, fcnt);  in hfcpci_empty_fifo_trans()
425 		if (*z2r + fcnt <= B_FIFO_SIZE + B_SUB_VAL)  in hfcpci_empty_fifo_trans()
426 			maxlen = fcnt;	/* complete transfer */  in hfcpci_empty_fifo_trans()
432 		fcnt -= maxlen;  in hfcpci_empty_fifo_trans()
434 		if (fcnt) {	/* rest remaining */  in hfcpci_empty_fifo_trans()
437 			memcpy(ptr, ptr1, fcnt);	/* rest */  in hfcpci_empty_fifo_trans()
521 	int fcnt;  in hfcpci_fill_dfifo()  local
537 	fcnt = df->f1 - df->f2;	/* frame count actually buffered */  in hfcpci_fill_dfifo()
538 	if (fcnt < 0)  in hfcpci_fill_dfifo()
539 		fcnt += (MAX_D_FRAMES + 1);	/* if wrap around */  in hfcpci_fill_dfifo()
540 	if (fcnt > (MAX_D_FRAMES - 1)) {  in hfcpci_fill_dfifo()
592 	int maxlen, fcnt;  in hfcpci_fill_fifo()  local
618 		fcnt = *z2t - *z1t;  in hfcpci_fill_fifo()
619 		if (fcnt <= 0)  in hfcpci_fill_fifo()
620 			fcnt += B_FIFO_SIZE;	/* fcnt contains available bytes in fifo */  in hfcpci_fill_fifo()
621 		fcnt = B_FIFO_SIZE - fcnt;	/* remaining bytes to send */  in hfcpci_fill_fifo()
623 		while ((fcnt < 2 * HFCPCI_BTRANS_THRESHOLD) && (bcs->tx_skb)) {  in hfcpci_fill_fifo()
624 			if (bcs->tx_skb->len < B_FIFO_SIZE - fcnt) {  in hfcpci_fill_fifo()
645 				fcnt += bcs->tx_skb->len;  in hfcpci_fill_fifo()
671 	fcnt = bz->f1 - bz->f2;	/* frame count actually buffered */  in hfcpci_fill_fifo()
672 	if (fcnt < 0)  in hfcpci_fill_fifo()
673 		fcnt += (MAX_B_FRAMES + 1);	/* if wrap around */  in hfcpci_fill_fifo()
674 	if (fcnt > (MAX_B_FRAMES - 1)) {  in hfcpci_fill_fifo()