md_start
r = md_start(&rs->md);
md_start(mddev);
EXPORT_SYMBOL_GPL(md_start);
extern int md_start(struct mddev *mddev);
u32 md_start;
bs->md_start = 0;
bs->md_start += t->len;
if (multidata && bs->md_start > HSSPI_MAX_PREPEND_LEN) {
reg |= bs->md_start << MODE_CTRL_MULTIDATA_RD_STRT_SHIFT;
reg |= bs->md_start << MODE_CTRL_MULTIDATA_WR_STRT_SHIFT;