vfio-pci: Enable device before attempting reset
[~shefty/rdma-dev.git] / drivers / vfio / pci / vfio_pci.c
index 306b90cf051f63b9bd79337d94b804309288aca4..b28e66c4376ab3c320e144714f6f38a02e05fc9a 100644 (file)
@@ -43,6 +43,10 @@ static int vfio_pci_enable(struct vfio_pci_device *vdev)
        u16 cmd;
        u8 msix_pos;
 
+       ret = pci_enable_device(pdev);
+       if (ret)
+               return ret;
+
        vdev->reset_works = (pci_reset_function(pdev) == 0);
        pci_save_state(pdev);
        vdev->pci_saved_state = pci_store_saved_state(pdev);
@@ -51,8 +55,11 @@ static int vfio_pci_enable(struct vfio_pci_device *vdev)
                         __func__, dev_name(&pdev->dev));
 
        ret = vfio_config_init(vdev);
-       if (ret)
-               goto out;
+       if (ret) {
+               pci_load_and_free_saved_state(pdev, &vdev->pci_saved_state);
+               pci_disable_device(pdev);
+               return ret;
+       }
 
        if (likely(!nointxmask))
                vdev->pci_2_3 = pci_intx_mask_supported(pdev);
@@ -77,17 +84,7 @@ static int vfio_pci_enable(struct vfio_pci_device *vdev)
        } else
                vdev->msix_bar = 0xFF;
 
-       ret = pci_enable_device(pdev);
-       if (ret)
-               goto out;
-
-       return ret;
-
-out:
-       kfree(vdev->pci_saved_state);
-       vdev->pci_saved_state = NULL;
-       vfio_config_free(vdev);
-       return ret;
+       return 0;
 }
 
 static void vfio_pci_disable(struct vfio_pci_device *vdev)