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

If we were not able to map the io bar in device init, don't attempt
to unmap it in device fini.  All radeons should have a io bar, so
I doubt this would ever trigger, but just to be on the safe side...

Pointed out by: Alberto Milone <alberto.milone@canonical.com>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher 15 роки тому
батько
коміт
e0a2ca7375
1 змінених файлів з 2 додано та 1 видалено
  1. 2 1
      drivers/gpu/drm/radeon/radeon_device.c

+ 2 - 1
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;