On Sun, Feb 06, 2005 at 03:29:12PM +0100, Robert Schwebel wrote: > Hi, > > I have a locking problem with platform devices in a little bit unusual > scenario; we have an FPGA which has a device information memory block > for the several "parts" in the FPGA. So we have written a base driver > which registers the device information block with the driver model, then > looks what is in the FPGA, registers the according "devices" with the > driver model and issues hotplug events to load the related drivers. > > The registration works fine, although we call platform_add_devices() > from the base driver for all the "sub devices"; but when we try to > unload the drivers there is a deadlock. On driver exit we call > platform_device_unregister() for the base driver which seems to be run > under a lock which is also being aquired when unregistering the devices > "inside" the FPGA. > > Before I investigate deeper - did anyone see this behaviour before?
Known issue, you can't recursivly register or unregister with the driver core right now. I'm working on fixing this issue. thanks, greg k-h - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
