diff options
Diffstat (limited to 'drivers/virtio/virtio_pci_modern_dev.c')
| -rw-r--r-- | drivers/virtio/virtio_pci_modern_dev.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/drivers/virtio/virtio_pci_modern_dev.c b/drivers/virtio/virtio_pci_modern_dev.c index 869cb46bef96..aad7d9296e77 100644 --- a/drivers/virtio/virtio_pci_modern_dev.c +++ b/drivers/virtio/virtio_pci_modern_dev.c @@ -218,21 +218,29 @@ int vp_modern_probe(struct virtio_pci_modern_device *mdev) int err, common, isr, notify, device; u32 notify_length; u32 notify_offset; + int devid; check_offsets(); - /* We only own devices >= 0x1000 and <= 0x107f: leave the rest. */ - if (pci_dev->device < 0x1000 || pci_dev->device > 0x107f) - return -ENODEV; - - if (pci_dev->device < 0x1040) { - /* Transitional devices: use the PCI subsystem device id as - * virtio device id, same as legacy driver always did. - */ - mdev->id.device = pci_dev->subsystem_device; + if (mdev->device_id_check) { + devid = mdev->device_id_check(pci_dev); + if (devid < 0) + return devid; + mdev->id.device = devid; } else { - /* Modern devices: simply use PCI device id, but start from 0x1040. */ - mdev->id.device = pci_dev->device - 0x1040; + /* We only own devices >= 0x1000 and <= 0x107f: leave the rest. */ + if (pci_dev->device < 0x1000 || pci_dev->device > 0x107f) + return -ENODEV; + + if (pci_dev->device < 0x1040) { + /* Transitional devices: use the PCI subsystem device id as + * virtio device id, same as legacy driver always did. + */ + mdev->id.device = pci_dev->subsystem_device; + } else { + /* Modern devices: simply use PCI device id, but start from 0x1040. */ + mdev->id.device = pci_dev->device - 0x1040; + } } mdev->id.vendor = pci_dev->subsystem_vendor; @@ -260,7 +268,8 @@ int vp_modern_probe(struct virtio_pci_modern_device *mdev) return -EINVAL; } - err = dma_set_mask_and_coherent(&pci_dev->dev, DMA_BIT_MASK(64)); + err = dma_set_mask_and_coherent(&pci_dev->dev, + mdev->dma_mask ? : DMA_BIT_MASK(64)); if (err) err = dma_set_mask_and_coherent(&pci_dev->dev, DMA_BIT_MASK(32)); |