On Thu, Oct 01, 2020 at 02:55:26PM +0200, gregkh@xxxxxxxxxxxxxxxxxxx wrote: > I agree, but with just one user (in a very odd way I do have to say, > more on that on the review of that specific patch), it's hard to judge > if this is useful are not, right? I agree with you completely, this SOF usage is quite weird and not what I think is representative. I never imagined this stuff would be used inside a single driver in a single subsystem. It was imagined for cross-subsystem sharing. > So, what happened to at least the Intel SOF driver usage? That was the > original user of this bus (before it was renamed), surely that patchset > should be floating around somewhere in Intel, right? The first user was irdma (the New Intel RDMA driver): https://lore.kernel.org/linux-rdma/20200520070415.3392210-1-jeffrey.t.kirsher@xxxxxxxxx/ (look at patch 1, search for virtbus) I kicked it off when I said I was sick of RDMA RoCE drivers re-implementing the driver core register/unregister and module management to share a PCI device between netdev and RDMA. This has been going on for almost two years now. I did not think it would be so hard. Jason
