Are you guys saying that you had a PortCls audio driver to control a USB or FireWire device? I posted a question lately about that topic. I have "inherited" such a driver and my job is to make it work. That driver unloads correctly most of the time when I unplug the device. But if I unplug the device while a stream is opened, there is a reference to the device object that is not decremented and that prevents my driver from being unloaded. Needless to say, that referencing is not mine. Did you guys have problems with this scenario? Surprise Removal of a device driven by a PortCls-based driver while a stream is opened? Got XP SP1. Mat -----Original Message----- From: bart@xxxxxxxxxxxxx [mailto:bart@xxxxxxxxxxxxx] Sent: Tuesday, April 22, 2003 5:27 AM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Re: Port Class Mini-ports > You can set your own manager functions in DriverEntry : > DriverObject->MajorFunction[IRP_MJ_CREATE] = YourOwn; > DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL]] = YourOwn; > etc... > I did it a few times.. > That was the 'indecent hacking' I meant :) I don't know it PortCls relies on the handles it installs itself at this place. You even could 'intercept' the original PortCls function pointers and calll these when the IOCTL or PNP is not handled by your own code. But if surprise removal still works properly after this hacks..... Regards, Bart ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.de/ ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.de/
