On Mon, Sep 12, 2016 at 10:10 AM, Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> wrote: > On Fri, Sep 09, 2016 at 09:12:49AM -0500, Aaron Durbin wrote: >> On Wed, Aug 17, 2016 at 6:02 PM, Aaron Durbin <adurbin@xxxxxxxxxx> wrote: >> > On Tue, Aug 16, 2016 at 2:15 AM, Mika Westerberg >> > <mika.westerberg@xxxxxxxxxxxxxxx> wrote: >> >> On Fri, Aug 12, 2016 at 11:45:30AM -0500, Aaron Durbin wrote: >> >>> Was anyone able to take a look into a solution for the current >> >>> problem? Again, please feel free to ask if anyone would like help >> >>> testing potential solutions. >> >> >> >> Below is one proposal for fixing the issue. It is just a prototype and >> >> I'm not sure if it takes everything needed into account. Would you be >> >> able to try it out and let us know if it works for you? >> > >> > Yes. I'll give it a go. I'm traveling this week so it won't likely be >> > til early next week. Thanks for the proposed fix. I'll report back on >> > my findings. >> > >> >> Sorry for the late response. I tried the patch and it works with ACPI >> devices in a hierarchy below PCI devices. I didn't have any ACPI >> drivers probed but I was able to hang 2 ACPI devices off of a BAR that >> had a driver for the PCI device without any resource conflicts >> (snippet from /proc/iomem): >> >> c2a43000-c2a43fff : 0000:00:1b.0 >> c2a43000-c2a437ff : GOOG1234:00 >> c2a43800-c2a43fff : GOOG1235:00 > > Thanks for testing. > >> One observation that I don't think matters much, but I wanted to write >> it down in case anyone pulls this thread up again. In the case of >> finding the parent resource, the ACPI devcie's resources won't show up >> in the resource tree until the pci parent devices' resources are >> inserted. > > Right, that's expected as the parent PCI device resources will be > allocated a bit later when pcibios_resource_survey_bus() is called. > > Rafael, Bjorn, > > What do you think? Should I clean up the code and send it out as a > formal patch? Yes, please, unless Bjorn disagrees. :-) Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
