XPEND
if (inb(host->addr + TUL_XStatus) & XPEND) { /* DMA xfer pending, Send STOP */
while (inb(host->addr + TUL_XStatus) & XPEND)
if (inb(host->addr + TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */
if (inb(host->addr + TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */