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_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 99928b9..792c3e3 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -266,32 +266,21 @@
static int drm_mode_object_get(struct drm_device *dev,
struct drm_mode_object *obj, uint32_t obj_type)
{
- int new_id = 0;
int ret;
-again:
- if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
- DRM_ERROR("Ran out memory getting a mode number\n");
- return -ENOMEM;
- }
-
mutex_lock(&dev->mode_config.idr_mutex);
- ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
-
- if (!ret) {
+ ret = idr_alloc(&dev->mode_config.crtc_idr, obj, 1, 0, GFP_KERNEL);
+ if (ret >= 0) {
/*
* Set up the object linking under the protection of the idr
* lock so that other users can't see inconsistent state.
*/
- obj->id = new_id;
+ obj->id = ret;
obj->type = obj_type;
}
mutex_unlock(&dev->mode_config.idr_mutex);
- if (ret == -EAGAIN)
- goto again;
-
- return ret;
+ return ret < 0 ? ret : 0;
}
/**