pmc_usb_command
ret = pmc_usb_command(port, msg, sizeof(msg));
return pmc_usb_command(port, msg, sizeof(msg));
ret = pmc_usb_command(port, (void *)&req, sizeof(req));
return pmc_usb_command(port, (void *)&req, sizeof(req));
return pmc_usb_command(port, (void *)&req, sizeof(req));
return pmc_usb_command(port, &msg, sizeof(msg));
return pmc_usb_command(port, msg, sizeof(msg));
return pmc_usb_command(port, msg, sizeof(msg));