Commit a13b1e47 authored by Bo Liu's avatar Bo Liu Committed by Alex Williamson
Browse files

vfio: check vfio_register_iommu_driver() return value 



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

Signed-off-by: default avatarBo Liu <liubo03@inspur.com>
Acked-by: default avatarCornelia Huck <cohuck@redhat.com>
Link: https://lore.kernel.org/r/20220622045651.5416-1-liubo03@inspur.com


Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
parent d1877e63

drivers/vfio/vfio.c

+7 −3
Original line number Diff line number Diff line
@@ -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;