On Sun, 29 Jul 2007 17:45:35 +0200 Krzysztof Helt <krzysztof.h1@xxxxx> wrote: > It is not DMA I suppose. It does not happen in any specific place. It is easy to trigger by loading > and unloading the sunlance module, but it hangs linux in other places (init process, console login). > > It happens only in SMP. If it happens in the sunlance module it happens in sparc_lance_probe_one() > (in probing function). I thought it is due to openprom accesses so I commented them out (and put > hardcoded values there). No real change. It is always in the probe_one method before any DMA is > started. > I was able to find out that it is definitely prom related. When I removed also prom_node_has_property() call, there is no bug any more. It locks inside prom_XXX access functions (e.g. __prom_nextprop or prom_getproplen). The old prom system was working so I think the new openprom patches created this bug. How does the new system access the prom? Is the old prom lock is taken into consideration? Regards, Krzysztof - To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
