drm: convert to idr_alloc()
Convert to the much saner new idr interface.
* drm_ctxbitmap_next() error handling in drm_addctx() seems broken.
drm_ctxbitmap_next() return -errno on failure not -1.
[artem.savkov@gmail.com: missing idr_preload_end in drm_gem_flink_ioctl]
[jslaby@suse.cz: fix drm_gem_flink_ioctl() return value]
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: David Airlie <airlied@linux.ie>
Signed-off-by: Artem Savkov <artem.savkov@gmail.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index 200e104..7d30802 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -109,7 +109,6 @@
static int drm_minor_get_id(struct drm_device *dev, int type)
{
- int new_id;
int ret;
int base = 0, limit = 63;
@@ -121,25 +120,11 @@
limit = base + 255;
}
-again:
- if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
- DRM_ERROR("Out of memory expanding drawable idr\n");
- return -ENOMEM;
- }
mutex_lock(&dev->struct_mutex);
- ret = idr_get_new_above(&drm_minors_idr, NULL,
- base, &new_id);
+ ret = idr_alloc(&drm_minors_idr, NULL, base, limit, GFP_KERNEL);
mutex_unlock(&dev->struct_mutex);
- if (ret == -EAGAIN)
- goto again;
- else if (ret)
- return ret;
- if (new_id >= limit) {
- idr_remove(&drm_minors_idr, new_id);
- return -EINVAL;
- }
- return new_id;
+ return ret == -ENOSPC ? -EINVAL : ret;
}
struct drm_master *drm_master_create(struct drm_minor *minor)