drm/amdgpu: use simpler remove_conflicting_pci_framebuffers()

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/fe59ab587ef4ef799b525fcc03d87800c5dc26d9.1535810304.git.mirq-linux@rere.qmqm.pl

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

@@ -785,28 +785,6 @@ MODULE_DEVICE_TABLE(pci, pciidlist);
 
 static struct drm_driver kms_driver;
 
-static int amdgpu_kick_out_firmware_fb(struct pci_dev *pdev)
-{
-	struct apertures_struct *ap;
-	bool primary = false;
-
-	ap = alloc_apertures(1);
-	if (!ap)
-		return -ENOMEM;
-
-	ap->ranges[0].base = pci_resource_start(pdev, 0);
-	ap->ranges[0].size = pci_resource_len(pdev, 0);
-
-#ifdef CONFIG_X86
-	primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
-#endif
-	drm_fb_helper_remove_conflicting_framebuffers(ap, "amdgpudrmfb", primary);
-	kfree(ap);
-
-	return 0;
-}
-
-
 static int amdgpu_pci_probe(struct pci_dev *pdev,
 			    const struct pci_device_id *ent)
 {
@@ -834,7 +812,7 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
 		return ret;
 
 	/* Get rid of things like offb */
-	ret = amdgpu_kick_out_firmware_fb(pdev);
+	ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, 0, "amdgpudrmfb");
 	if (ret)
 		return ret;