isostream模式的错误，有人帮助么？

我用IOCTL_EZUSB_START_ISO_STREAM命令后，马上看到wdm返回0xc0000001,就是错误的意思，而且请求包的状态位是负数。我如果用IOCTL_EZUSB_ISO_READ命令，头两帧的irp返回状态也是0xc0000001,但是后面的都返回0，就是正确了，怎么回事呢？

情况如下
Ezusb_StartIsoTransfer()  PacketCount 64   bufferLength  66304
IsoTransferComplete Irp Status 0xc0000001
Packet 0 length = 0 status = -1073741807
Packet 1 length = 0 status = -1073741807
Packet 2 length = 0 status = -1073741807
Packet 3 length = 0 status = -1073741807
Packet 4 length = 0 status = -1073741807
Packet 5 length = 0 status = -1073741807
Packet 6 length = 0 status = -1073741807
Packet 7 length = 0 status = -1073741807

IsoTransferComplete setting up the next transfer at frame 24
IsoTransferComplete Irp Status 0x0
NT_SUCCESS
Packet 0 length = 0 status = 0
Packet 1 length = 0 status = 0
Packet 2 length = 0 status = 0
Packet 3 length = 0 status = 0
Packet 4 length = 0 status = 0
Packet 5 length = 0 status = 0
Packet 6 length = 0 status = 0
Packet 7 length = 0 status = 0