exec_command
int exec_command(void);
(status = exec_command()) < 0 ||
(status = exec_command()) >= 0) {
.exec_command = meson_sdhc_exec_command,
.exec_command = meson_sdio_exec_command,
.exec_command = mesongx_mmc_exec_command,
.exec_command = sdhost_exec_command,
.exec_command = imx23_mmc_exec_command,
.exec_command = sssdi_exec_command,
.exec_command = sunxi_mmc_exec_command,
.exec_command = pxamci_exec_command,
.exec_command = scimci_exec_command,
.exec_command = ssumci_exec_command,
.exec_command = dwc_mmc_exec_command,
.exec_command = plmmc_exec_command,
.exec_command = rtsx_exec_command,
.exec_command = wb_sdmmc_exec_command,
.exec_command = mvsdio_exec_command,
.exec_command = sdhc_exec_command,
void (*exec_command)(sdmmc_chipset_handle_t,
((tag)->exec_command((handle), (cmdp)))