On Wed, Oct 12, 2022 at 05:21:24PM +1100, Michael Ellerman wrote: > "Michael S. Tsirkin" <mst@xxxxxxxxxx> writes: > > The following changes since commit 4fe89d07dcc2804c8b562f6c7896a45643d34b2f: > > > > Linux 6.0 (2022-10-02 14:09:07 -0700) > > > > are available in the Git repository at: > > > > https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus > > > > for you to fetch changes up to 71491c54eafa318fdd24a1f26a1c82b28e1ac21d: > > > > virtio_pci: don't try to use intxif pin is zero (2022-10-07 20:00:44 -0400) > > > > ---------------------------------------------------------------- > > virtio: fixes, features > > > > 9k mtu perf improvements > > vdpa feature provisioning > > virtio blk SECURE ERASE support > > > > Fixes, cleanups all over the place. > > > > Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx> > > > > ---------------------------------------------------------------- > > Alvaro Karsz (1): > > virtio_blk: add SECURE ERASE command support > > > > Angus Chen (1): > > virtio_pci: don't try to use intxif pin is zero > > This commit breaks virtio_pci for me on powerpc, when running as a qemu > guest. > > vp_find_vqs() bails out because pci_dev->pin == 0. > > But pci_dev->irq is populated correctly, so vp_find_vqs_intx() would > succeed if we called it - which is what the code used to do. > > I think this happens because pci_dev->pin is not populated in > pci_assign_irq(). > > I would absolutely believe this is bug in our PCI code, but I think it > may also affect other platforms that use of_irq_parse_and_map_pci(). > > cheers How about fixing this in of_irq_parse_and_map_pci then? Something like the below maybe? diff --git a/drivers/pci/of.c b/drivers/pci/of.c index 196834ed44fe..504c4d75c83f 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -446,6 +446,8 @@ static int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args * if (pin == 0) return -ENODEV; + pdev->pin = pin; + /* Local interrupt-map in the device node? Use it! */ if (of_get_property(dn, "interrupt-map", NULL)) { pin = pci_swizzle_interrupt_pin(pdev, pin);
