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_gem.c b/drivers/gpu/drm/drm_gem.c
index e775859..af779ae 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -270,21 +270,19 @@
int ret;
/*
- * Get the user-visible handle using idr.
+ * Get the user-visible handle using idr. Preload and perform
+ * allocation under our spinlock.
*/
-again:
- /* ensure there is space available to allocate a handle */
- if (idr_pre_get(&file_priv->object_idr, GFP_KERNEL) == 0)
- return -ENOMEM;
-
- /* do the allocation under our spinlock */
+ idr_preload(GFP_KERNEL);
spin_lock(&file_priv->table_lock);
- ret = idr_get_new_above(&file_priv->object_idr, obj, 1, (int *)handlep);
+
+ ret = idr_alloc(&file_priv->object_idr, obj, 1, 0, GFP_NOWAIT);
+
spin_unlock(&file_priv->table_lock);
- if (ret == -EAGAIN)
- goto again;
- else if (ret)
+ idr_preload_end();
+ if (ret < 0)
return ret;
+ *handlep = ret;
drm_gem_object_handle_reference(obj);
@@ -451,29 +449,25 @@
if (obj == NULL)
return -ENOENT;
-again:
- if (idr_pre_get(&dev->object_name_idr, GFP_KERNEL) == 0) {
- ret = -ENOMEM;
- goto err;
- }
-
+ idr_preload(GFP_KERNEL);
spin_lock(&dev->object_name_lock);
if (!obj->name) {
- ret = idr_get_new_above(&dev->object_name_idr, obj, 1,
- &obj->name);
+ ret = idr_alloc(&dev->object_name_idr, obj, 1, 0, GFP_NOWAIT);
+ obj->name = ret;
args->name = (uint64_t) obj->name;
spin_unlock(&dev->object_name_lock);
+ idr_preload_end();
- if (ret == -EAGAIN)
- goto again;
- else if (ret)
+ if (ret < 0)
goto err;
+ ret = 0;
/* Allocate a reference for the name table. */
drm_gem_object_reference(obj);
} else {
args->name = (uint64_t) obj->name;
spin_unlock(&dev->object_name_lock);
+ idr_preload_end();
ret = 0;
}