1 files changed, 3 insertions, 71 deletions

diff --git a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
index 4a8941fa0815..6d11e7938c83 100644
--- a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
+++ b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
@@ -69,56 +69,7 @@ static struct pci_driver hyperv_pci_driver = {
 	.remove =	hyperv_pci_remove,
 };
 
-static int hyperv_setup_gen1(struct hyperv_drm_device *hv)
-{
-	struct drm_device *dev = &hv->dev;
-	struct pci_dev *pdev;
-	int ret;
-
-	pdev = pci_get_device(PCI_VENDOR_ID_MICROSOFT,
-			      PCI_DEVICE_ID_HYPERV_VIDEO, NULL);
-	if (!pdev) {
-		drm_err(dev, "Unable to find PCI Hyper-V video\n");
-		return -ENODEV;
-	}
-
-	ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &hyperv_driver);
-	if (ret) {
-		drm_err(dev, "Not able to remove boot fb\n");
-		return ret;
-	}
-
-	if (pci_request_region(pdev, 0, DRIVER_NAME) != 0)
-		drm_warn(dev, "Cannot request framebuffer, boot fb still active?\n");
-
-	if ((pdev->resource[0].flags & IORESOURCE_MEM) == 0) {
-		drm_err(dev, "Resource at bar 0 is not IORESOURCE_MEM\n");
-		ret = -ENODEV;
-		goto error;
-	}
-
-	hv->fb_base = pci_resource_start(pdev, 0);
-	hv->fb_size = pci_resource_len(pdev, 0);
-	if (!hv->fb_base) {
-		drm_err(dev, "Resource not available\n");
-		ret = -ENODEV;
-		goto error;
-	}
-
-	hv->fb_size = min(hv->fb_size,
-			  (unsigned long)(hv->mmio_megabytes * 1024 * 1024));
-	hv->vram = devm_ioremap(&pdev->dev, hv->fb_base, hv->fb_size);
-	if (!hv->vram) {
-		drm_err(dev, "Failed to map vram\n");
-		ret = -ENOMEM;
-	}
-
-error:
-	pci_dev_put(pdev);
-	return ret;
-}
-
-static int hyperv_setup_gen2(struct hyperv_drm_device *hv,
+static int hyperv_setup_vram(struct hyperv_drm_device *hv,
 			     struct hv_device *hdev)
 {
 	struct drm_device *dev = &hv->dev;
@@ -181,10 +132,7 @@ static int hyperv_vmbus_probe(struct hv_device *hdev,
 		goto err_hv_set_drv_data;
 	}
 
-	if (efi_enabled(EFI_BOOT))
-		ret = hyperv_setup_gen2(hv, hdev);
-	else
-		ret = hyperv_setup_gen1(hv);
+	ret = hyperv_setup_vram(hv, hdev);
 
 	if (ret)
 		goto err_vmbus_close;
@@ -225,29 +173,13 @@ static int hyperv_vmbus_remove(struct hv_device *hdev)
 {
 	struct drm_device *dev = hv_get_drvdata(hdev);
 	struct hyperv_drm_device *hv = to_hv(dev);
-	struct pci_dev *pdev;
 
 	drm_dev_unplug(dev);
 	drm_atomic_helper_shutdown(dev);
 	vmbus_close(hdev->channel);
 	hv_set_drvdata(hdev, NULL);
 
-	/*
-	 * Free allocated MMIO memory only on Gen2 VMs.
-	 * On Gen1 VMs, release the PCI device
-	 */
-	if (efi_enabled(EFI_BOOT)) {
-		vmbus_free_mmio(hv->mem->start, hv->fb_size);
-	} else {
-		pdev = pci_get_device(PCI_VENDOR_ID_MICROSOFT,
-				      PCI_DEVICE_ID_HYPERV_VIDEO, NULL);
-		if (!pdev) {
-			drm_err(dev, "Unable to find PCI Hyper-V video\n");
-			return -ENODEV;
-		}
-		pci_release_region(pdev, 0);
-		pci_dev_put(pdev);
-	}
+	vmbus_free_mmio(hv->mem->start, hv->fb_size);
 
 	return 0;
 }