From: Dave Airlie <airlied@xxxxxxxxxx>
I think I might have been responsible for some of this, but it's messy
to decode, this doesn't change anything, but cleans up the goto's
and exit paths.
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
---
drivers/gpu/drm/drm_prime.c | 73 ++++++++++++++++++++-------------------------
1 file changed, 32 insertions(+), 41 deletions(-)
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 9f935f5..d22ce83 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -420,47 +420,42 @@ int drm_gem_prime_handle_to_fd(struct drm_device *dev,
dmabuf = drm_prime_lookup_buf_by_handle(&file_priv->prime, handle);
if (dmabuf) {
get_dma_buf(dmabuf);
- goto out_have_handle;
- }
-
- mutex_lock(&dev->object_name_lock);
- /* re-export the original imported object */
- if (obj->import_attach) {
- dmabuf = obj->import_attach->dmabuf;
- get_dma_buf(dmabuf);
- goto out_have_obj;
- }
-
- if (obj->dma_buf) {
- get_dma_buf(obj->dma_buf);
- dmabuf = obj->dma_buf;
- goto out_have_obj;
- }
+ } else {
+ mutex_lock(&dev->object_name_lock);
+ /* re-export the original imported object */
+ if (obj->import_attach) {
+ dmabuf = obj->import_attach->dmabuf;
+ get_dma_buf(dmabuf);
+ } else if (obj->dma_buf) {
+ get_dma_buf(obj->dma_buf);
+ dmabuf = obj->dma_buf;
+ } else {
+ dmabuf = export_and_register_object(dev, obj, flags);
+ if (IS_ERR(dmabuf)) {
+ /* normally the created dma-buf takes ownership of the ref,
+ * but if that fails then drop the ref
+ */
+ ret = PTR_ERR(dmabuf);
+ mutex_unlock(&dev->object_name_lock);
+ goto out;
+ }
+ }
- dmabuf = export_and_register_object(dev, obj, flags);
- if (IS_ERR(dmabuf)) {
- /* normally the created dma-buf takes ownership of the ref,
- * but if that fails then drop the ref
+ /*
+ * If we've exported this buffer then cheat and add it to the import list
+ * so we get the correct handle back. We must do this under the
+ * protection of dev->object_name_lock to ensure that a racing gem close
+ * ioctl doesn't miss to remove this buffer handle from the cache.
*/
- ret = PTR_ERR(dmabuf);
+ ret = drm_prime_add_buf_handle(&file_priv->prime,
+ dmabuf, handle);
mutex_unlock(&dev->object_name_lock);
- goto out;
+ if (ret) {
+ dma_buf_put(dmabuf);
+ goto out;
+ }
}
-out_have_obj:
- /*
- * If we've exported this buffer then cheat and add it to the import list
- * so we get the correct handle back. We must do this under the
- * protection of dev->object_name_lock to ensure that a racing gem close
- * ioctl doesn't miss to remove this buffer handle from the cache.
- */
- ret = drm_prime_add_buf_handle(&file_priv->prime,
- dmabuf, handle);
- mutex_unlock(&dev->object_name_lock);
- if (ret)
- goto fail_put_dmabuf;
-
-out_have_handle:
ret = dma_buf_fd(dmabuf, flags);
/*
* We must _not_ remove the buffer from the handle cache since the newly
@@ -469,16 +464,12 @@ out_have_handle:
* Closing the handle will clean out the cache anyway, so we don't leak.
*/
if (ret < 0) {
- goto fail_put_dmabuf;
+ dma_buf_put(dmabuf);
} else {
*prime_fd = ret;
ret = 0;
}
- goto out;
-
-fail_put_dmabuf:
- dma_buf_put(dmabuf);
out:
drm_gem_object_unreference_unlocked(obj);
out_unlock:
--
2.5.0
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