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

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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>
This commit is contained in:
Alex Deucher 2010-07-08 12:24:52 -04:00 committed by Dave Airlie
parent ab9e1f5966
commit e0a2ca7375
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/radeon/radeon_device.c
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@ -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;