diff options
| -rw-r--r-- | drivers/misc/cxl/cxl.h | 2 | ||||
| -rw-r--r-- | drivers/misc/cxl/pci.c | 5 | ||||
| -rw-r--r-- | drivers/misc/cxl/vphb.c | 9 |
3 files changed, 16 insertions, 0 deletions
diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h index e345860c25eb..38e21cf7806e 100644 --- a/drivers/misc/cxl/cxl.h +++ b/drivers/misc/cxl/cxl.h @@ -880,4 +880,6 @@ extern const struct cxl_backend_ops cxl_native_ops; extern const struct cxl_backend_ops cxl_guest_ops; extern const struct cxl_backend_ops *cxl_ops; +/* check if the given pci_dev is on the the cxl vphb bus */ +bool cxl_pci_is_vphb_device(struct pci_dev *dev); #endif diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c index 6cae0445a7c8..6634b7a3c42b 100644 --- a/drivers/misc/cxl/pci.c +++ b/drivers/misc/cxl/pci.c @@ -1243,6 +1243,11 @@ static int cxl_probe(struct pci_dev *dev, const struct pci_device_id *id) int slice; int rc; + if (cxl_pci_is_vphb_device(dev)) { + dev_dbg(&dev->dev, "cxl_init_adapter: Ignoring cxl vphb device\n"); + return -ENODEV; + } + if (cxl_verbose) dump_cxl_config_space(dev); diff --git a/drivers/misc/cxl/vphb.c b/drivers/misc/cxl/vphb.c index 490b93486451..cdc7723b845d 100644 --- a/drivers/misc/cxl/vphb.c +++ b/drivers/misc/cxl/vphb.c @@ -272,6 +272,15 @@ void cxl_pci_vphb_remove(struct cxl_afu *afu) pcibios_free_controller(phb); } +bool cxl_pci_is_vphb_device(struct pci_dev *dev) +{ + struct pci_controller *phb; + + phb = pci_bus_to_host(dev->bus); + + return (phb->ops == &cxl_pcie_pci_ops); +} + struct cxl_afu *cxl_pci_to_afu(struct pci_dev *dev) { struct pci_controller *phb; |