drm/radeon/kms: make sure rio_mem is valid before unmapping it

[~andy/linux] / drivers / gpu / drm / radeon / radeon_device.c

diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 0fea894fc1271d428759b26fb8642a22b8394a71..a64811a94519a1ce5bd245d7f2c864e0d68ecf3d 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -737,7 +737,8 @@ void radeon_device_fini(struct radeon_device *rdev)
        destroy_workqueue(rdev->wq);
        vga_switcheroo_unregister_client(rdev->pdev);
        vga_client_register(rdev->pdev, NULL, NULL, NULL);
-       pci_iounmap(rdev->pdev, rdev->rio_mem);
+       if (rdev->rio_mem)
+               pci_iounmap(rdev->pdev, rdev->rio_mem);
        rdev->rio_mem = NULL;
        iounmap(rdev->rmmio);
        rdev->rmmio = NULL;