Michael S. Tsirkin 2145ab513e virtio_pci: use irq to detect interrupt support ... commit 71491c54ea ("virtio_pci: don't try to use intxif pin is zero") breaks virtio_pci 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. This seems to happen because pci_dev->pin is not populated in pci_assign_irq(). A PCI core bug? Maybe. However Linus said: I really think that that is basically the only time you should use that 'pci_dev->pin' thing: it basically exists not for "does this device have an IRQ", but for "what is the routing of this irq on this device". and The correct way to check for "no irq" doesn't use NO_IRQ at all, it just does if (dev->irq) ... so let's just check irq and be done with it. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Reported-by: Michael Ellerman <mpe@ellerman.id.au> Fixes: 71491c54ea ("virtio_pci: don't try to use intxif pin is zero") Cc: "Angus Chen" <angus.chen@jaguarmicro.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Jason Wang <jasowang@redhat.com> Message-Id: <20221012220312.308522-1-mst@redhat.com>		2022-10-13 09:33:03 -04:00
..
Kconfig	virtio: fatures, fixes	2022-08-12 09:50:34 -07:00
Makefile	virtio: replace restricted mem access flag with callback	2022-08-01 07:42:49 +02:00
virtio_anchor.c	virtio: replace restricted mem access flag with callback	2022-08-01 07:42:49 +02:00
virtio_balloon.c	- The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe	2022-08-05 16:32:45 -07:00
virtio_dma_buf.c	dma-buf: move dma-buf symbols into the DMA_BUF module namespace	2021-10-25 14:53:08 +02:00
virtio_input.c	virtio: wrap config->reset calls	2022-01-14 18:50:52 -05:00
virtio_mem.c	mm: use is_zone_movable_page() helper	2022-07-29 18:07:20 -07:00
virtio_mmio.c	virtio: Revert "virtio: find_vqs() add arg sizes"	2022-08-16 01:40:24 -04:00
virtio_pci_common.c	virtio_pci: use irq to detect interrupt support	2022-10-13 09:33:03 -04:00
virtio_pci_common.h	virtio: Revert "virtio: find_vqs() add arg sizes"	2022-08-16 01:40:24 -04:00
virtio_pci_legacy_dev.c	virtio/virtio_pci_legacy_dev: ensure the correct return value	2022-01-14 18:50:53 -05:00
virtio_pci_legacy.c	virtio_pci: Revert "virtio_pci: support the arg sizes of find_vqs()"	2022-08-16 01:38:29 -04:00
virtio_pci_modern_dev.c	virtio_pci: introduce helper to get/set queue reset	2022-08-11 04:06:40 -04:00
virtio_pci_modern.c	virtio: Revert "virtio: find_vqs() add arg sizes"	2022-08-16 01:40:24 -04:00
virtio_ring.c	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -07:00
virtio_vdpa.c	virtio: Revert "virtio: find_vqs() add arg sizes"	2022-08-16 01:40:24 -04:00
virtio.c	virtio: fatures, fixes	2022-08-12 09:50:34 -07:00