From: Fred Gao <[email protected]> [ Upstream commit e4eccb853664de7bcf9518fb658f35e748bf1f68 ]
Bypass the IGD initialization when -ENODEV returns, that should be the case if opregion is not available for IGD or within discrete graphics device's option ROM, or host/lpc bridge is not found. Then use of -ENODEV here means no special device resources found which needs special care for VFIO, but we still allow other normal device resource access. Cc: Zhenyu Wang <[email protected]> Cc: Xiong Zhang <[email protected]> Cc: Hang Yuan <[email protected]> Cc: Stuart Summers <[email protected]> Signed-off-by: Fred Gao <[email protected]> Signed-off-by: Alex Williamson <[email protected]> Signed-off-by: Sasha Levin <[email protected]> --- drivers/vfio/pci/vfio_pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c index a72fd5309b09f..443a35dde7f52 100644 --- a/drivers/vfio/pci/vfio_pci.c +++ b/drivers/vfio/pci/vfio_pci.c @@ -334,7 +334,7 @@ static int vfio_pci_enable(struct vfio_pci_device *vdev) pdev->vendor == PCI_VENDOR_ID_INTEL && IS_ENABLED(CONFIG_VFIO_PCI_IGD)) { ret = vfio_pci_igd_init(vdev); - if (ret) { + if (ret && ret != -ENODEV) { pci_warn(pdev, "Failed to setup Intel IGD regions\n"); goto disable_exit; } -- 2.27.0
