question about starting and stopping a pci device

Hi,

I am trying to make a small lib based on the devcon sample that is supplied
with the DDK for mimicking the functionality of the device manager for
starting and stopping a device.

This works for disabling the device, but when I try to start the device
again i get device error 10. after some testing it turns out that the devcon
tool itself has the same results.

does anyone have an idea about what the cause of this could be. devcon is
made by microsoft themselves, so i should think that its device mimics the
device manager, but this does not seem to be the case.

kind regards,
Bruno.

 

Are you able to stop and start the device in the device manager without code
10 error?

--

 

Yes i am.
using the XP device manager, the device starts and stops normally without
any problem.

doing the same with the devcon tool gives me an 'error 10' when i try to
start the device again.

kind regards,
Bruno.

 

I don't think this is an issue with devcon. I tried disabling and enabling
couple of PCI devices on my system and it worked pretty well. Couple of
suggestions:

1) Try the devcon on other devices.
2) Try it on another system.
3) Look into setupapi.log and see if you find any clues as to why it's
failing with code 10.
4) If you are using the devcon from XP DDK, try the one from Server 2003
DDK.