diff options
| author |   Fred Gao <fred.gao@intel.com> | 2020-11-03 02:01:20 +0800 |
|---|---|---|
| committer |   Alex Williamson <alex.williamson@redhat.com> | 2020-11-03 11:07:40 -0700 |
| commit | e4eccb853664de7bcf9518fb658f35e748bf1f68 (patch) | |
| tree | 561446c090984cd13fd888ab25db5abbd7a11988 /drivers/vfio/pci/vfio_pci.c | |
| parent | vfio: platform: fix reference leak in vfio_platform_open (diff) | |
| download | linux-dev-e4eccb853664de7bcf9518fb658f35e748bf1f68.tar.xz linux-dev-e4eccb853664de7bcf9518fb658f35e748bf1f68.zip | |
vfio/pci: Bypass IGD init in case of -ENODEV
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 <zhenyuw@linux.intel.com>
Cc: Xiong Zhang <xiong.y.zhang@intel.com>
Cc: Hang Yuan <hang.yuan@linux.intel.com>
Cc: Stuart Summers <stuart.summers@intel.com>
Signed-off-by: Fred Gao <fred.gao@intel.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio/pci/vfio_pci.c')
| -rw-r--r-- | drivers/vfio/pci/vfio_pci.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c index fbd2b3404184..e6190173482c 100644 --- a/drivers/vfio/pci/vfio_pci.c +++ b/drivers/vfio/pci/vfio_pci.c @@ -385,7 +385,7 @@ 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; } |