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| author | Tejun Heo <tj@kernel.org> | 2013-02-27 17:04:48 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-27 19:10:19 -0800 |
| commit | a1c36b166be76763cfab1a4308a00d6ffd8a2cc0 (patch) | |
| tree | 1f1ac05adc65dcc76450acf770658068d242f3fa /drivers/vfio/vfio.c | |
| parent | 6d770931291eec7e7be774a5272db28d29899a66 (diff) | |
| download | op-kernel-dev-a1c36b166be76763cfab1a4308a00d6ffd8a2cc0.zip op-kernel-dev-a1c36b166be76763cfab1a4308a00d6ffd8a2cc0.tar.gz | |
vfio: convert to idr_alloc()
Convert to the much saner new idr interface.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/vfio/vfio.c')
| -rw-r--r-- | drivers/vfio/vfio.c | 17 |
1 files changed, 1 insertions, 16 deletions
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index 28e2d5b..fcc12f3 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -139,23 +139,8 @@ EXPORT_SYMBOL_GPL(vfio_unregister_iommu_driver); */ static int vfio_alloc_group_minor(struct vfio_group *group) { - int ret, minor; - -again: - if (unlikely(idr_pre_get(&vfio.group_idr, GFP_KERNEL) == 0)) - return -ENOMEM; - /* index 0 is used by /dev/vfio/vfio */ - ret = idr_get_new_above(&vfio.group_idr, group, 1, &minor); - if (ret == -EAGAIN) - goto again; - if (ret || minor > MINORMASK) { - if (minor > MINORMASK) - idr_remove(&vfio.group_idr, minor); - return -ENOSPC; - } - - return minor; + return idr_alloc(&vfio.group_idr, group, 1, MINORMASK + 1, GFP_KERNEL); } static void vfio_free_group_minor(int minor) |
