diff options
| author | Chengguang Xu <cgxu519@gmx.com> | 2019-02-12 13:59:29 +0800 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2019-02-12 13:20:56 -0700 |
| commit | 8bcb64a51065e957e170ada58cbbd766be6a9619 (patch) | |
| tree | 0f3439a7d5eade2b87f2ef1adfeec4666fcac9f7 /drivers/vfio | |
| parent | 3c8d7ef89bb8bd7d00910fa14d4dab14a8e0cf5a (diff) | |
vfio: expand minor range when registering chrdev region
Actually, total amount of available minor number
for a single major is MINORMARK + 1. So expand
minor range when registering chrdev region.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio')
| -rw-r--r-- | drivers/vfio/vfio.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index 64833879f75d..a3030cdf3c18 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -2219,12 +2219,12 @@ static int __init vfio_init(void) vfio.class->devnode = vfio_devnode; - ret = alloc_chrdev_region(&vfio.group_devt, 0, MINORMASK, "vfio"); + ret = alloc_chrdev_region(&vfio.group_devt, 0, MINORMASK + 1, "vfio"); if (ret) goto err_alloc_chrdev; cdev_init(&vfio.group_cdev, &vfio_group_fops); - ret = cdev_add(&vfio.group_cdev, vfio.group_devt, MINORMASK); + ret = cdev_add(&vfio.group_cdev, vfio.group_devt, MINORMASK + 1); if (ret) goto err_cdev_add; @@ -2236,7 +2236,7 @@ static int __init vfio_init(void) return 0; err_cdev_add: - unregister_chrdev_region(vfio.group_devt, MINORMASK); + unregister_chrdev_region(vfio.group_devt, MINORMASK + 1); err_alloc_chrdev: class_destroy(vfio.class); vfio.class = NULL; @@ -2254,7 +2254,7 @@ static void __exit vfio_cleanup(void) #endif idr_destroy(&vfio.group_idr); cdev_del(&vfio.group_cdev); - unregister_chrdev_region(vfio.group_devt, MINORMASK); + unregister_chrdev_region(vfio.group_devt, MINORMASK + 1); class_destroy(vfio.class); vfio.class = NULL; misc_deregister(&vfio_dev); |