sdio_func_read_cis
error = sdio_func_read_cis(sc, fn, cis_addr);
error = sdio_func_read_cis(sc, fn, cis_addr);
int sdio_func_read_cis(struct cam_device *dev, uint8_t func_number,
sdio_func_read_cis(dev, 0, cis_addr, &info);
sdio_func_read_cis(dev, 0, cis_addr, &ci->f[0]);
sdio_func_read_cis(dev, i, cis_addr, &ci->f[i]);