On Fri, 2013-06-21 at 10:14 -0700, Peter LaDow wrote: > After a (finally!) successful search of the list archive, I did find > this: > > http://web.archiveorange.com/archive/v/9IQA26gPvdf4foaTcmCV > > Which seems very related to my problem. However, the patch that is > ultimately referenced is in place in 3.0.80 (see > https://lists.ozlabs.org/pipermail/linuxppc-dev/2006-February/021267.html). > > Hmmm... perhaps our FDT is bad?
Afaik e300 is slightly out of order, maybe it's missing a memory barrier somewhere.... One thing to try is to add some to the dma_map/unmap ops. Also audit the driver to ensure that it properly uses barriers when populating descriptors (and maybe compare to a more recent version of the driver upstream). Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
