136 #define I596_NULL ((u32)0xffffffff)  macro
523 		rfd->rbd = I596_NULL;  in init_rx_bufs()
569 		dma->rfds[i].rbd = I596_NULL;  in rebuild_rx_bufs()
602 	dma->scb.cmd = I596_NULL;  in init_i596_mem()
692 		if (rfd->rbd == I596_NULL)  in i596_rx()
801 		rfd->rbd = I596_NULL;  in i596_rx()
850 				ptr->b_next = I596_NULL;  in i596_cleanup_cmd()
856 			ptr->b_next = I596_NULL;  in i596_cleanup_cmd()
862 	lp->dma->scb.cmd = I596_NULL;  in i596_cleanup_cmd()
908 	cmd->b_next = I596_NULL;  in i596_add_cmd()
1030 		tbd->next = I596_NULL;  in i596_start_xmit()
1098 	lp->dma->scb.cmd = I596_NULL;  in i82596_probe()
1099 	lp->dma->scb.rfd = I596_NULL;  in i82596_probe()
1253 			ptr->b_next = I596_NULL;  in i596_interrupt()