NAME
z8530_sync_dma_close - Close down DMA I/O
SYNOPSIS
int z8530_sync_dma_close (struct net_device * dev,
struct z8530_channel * c);
ARGUMENTS
dev Network device to detach
c Z8530 channel to move into discard mode
DESCRIPTION
Shut down a DMA mode synchronous interface. Halt the DMA, and free the
buffers.