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? Robert -- Dipl.-Ing. Robert Schwebel | http://www.pengutronix.de Pengutronix - Linux Solutions for Science and Industry Handelsregister: Amtsgericht Hildesheim, HRA 2686 Hannoversche Str. 2, 31134 Hildesheim, Germany Phone: +49-5121-206917-0 | Fax: +49-5121-206917-9 - 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/
