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vfio: check vfio_register_iommu_driver() return value

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As vfio_register_iommu_driver() can fail, we should check the return value.

Signed-off-by: Bo Liu <liubo03@inspur.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Link: https://lore.kernel.org/r/20220622045651.5416-1-liubo03@inspur.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Bo Liu 2022-06-22 00:56:51 -04:00 committed by Alex Williamson
parent d1877e639b
commit a13b1e472b
1 changed files with 7 additions and 3 deletions
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10
drivers/vfio/vfio.c
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@ -2156,13 +2156,17 @@ static int __init vfio_init(void)
if (ret)
goto err_alloc_chrdev;
pr_info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
#ifdef CONFIG_VFIO_NOIOMMU
vfio_register_iommu_driver(&vfio_noiommu_ops);
ret = vfio_register_iommu_driver(&vfio_noiommu_ops);
#endif
if (ret)
goto err_driver_register;
pr_info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
return 0;
err_driver_register:
unregister_chrdev_region(vfio.group_devt, MINORMASK + 1);
err_alloc_chrdev:
class_destroy(vfio.class);
vfio.class = NULL;