I am having some issues working with my usb to serial driver over a VMware view
environment. This is a KMDF driver.
The view environment is setup as follows. A view client will access a win7 image
stored on a VMware vSphere host. The connection is managed by a VMware View
Connection Server on a 64bit Windows Server 2008 R2 system. We're still trying to setup the environment based on our client mails so i don't have the complete setup description yet.
I went through the debug logs and it appears that the problem comes when trying to power-cycle the USB port using WdfUsbTargetDeviceCyclePortSynchronously .Basically what the driver does is in the EvtPrepareHardware callback it reads the configuration descriptor values and checks whether they are correct. If not a thread starts to reload the firmware and a boolean value is set to perform a unplug-plug operation after reloading the firmware. The reloading part is being completed correctly but WdfUsbTargetDeviceCyclePortSynchronously always returns a
0xc0000001(STATUS_UNSUCCESSFUL) error code and the device is not being reenumerated .
Also i have another problem when setting the power policy of the device. This device supports remote wake feature but when i try to set it using WdfDeviceAssignS0IdleSettings it always returns a c00002d3 error code.
Does anyone has any idea as to why these problems are occuring? These errors occur only in VMware view environment. The driver is working fine on all versions of Windows and also on VMWare workstation 9. Is this because these features are not supported by VMware view?
I had asked the same question on microsoft forums and their people suggested i contact vmware since the driver works correctly on real h/w it might be a problem with vmware emulation.
Is anyone else experiencing these issue? Can anyone suggest whom to contact to solve these issues?
Any help on this would be greatly appreciated.