关于KernelIoControl
KernelIoControl的第一个参数IOCTL_HAL_RELEASE_SYSINTR与IOCTL_HAL_REQUEST_SYSINTR有什么区别:即KernelIoControl(IOCTL_HAL_RELEASE_SYSINTR,&pHardwareContext-dwSysintrSDMMC,sizeof(DWORD),NULL,0,NULL)与KernelIoControl(IOCTL_HAL_REQUEST_SYSINTR,&dwSDCDIr