>From drm gem CMA helper, it wasn't fixed dma_buf refcount problem fixed
by commit 011c228. This patch solves it.
Signed-off-by: Joonyoung Shim <jy0922.s...@samsung.com>
---
drivers/gpu/drm/drm_gem_cma_helper.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c
b/drivers/gpu/drm/drm_gem_cma_helper.c
index ce06397..3f3a12b 100644
--- a/drivers/gpu/drm/drm_gem_cma_helper.c
+++ b/drivers/gpu/drm/drm_gem_cma_helper.c
@@ -554,7 +554,6 @@ struct drm_gem_object *drm_gem_cma_dmabuf_import(struct
drm_device *drm,
* refcount on gem itself instead of f_count of dmabuf.
*/
drm_gem_object_reference(obj);
- dma_buf_put(dma_buf);
return obj;
}
}
@@ -573,6 +572,8 @@ struct drm_gem_object *drm_gem_cma_dmabuf_import(struct
drm_device *drm,
goto error_gem_free;
}
+ get_dma_buf(dma_buf);
+
sgt = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL);
if (IS_ERR_OR_NULL(sgt)) {
ret = sgt ? PTR_ERR(sgt) : -ENOMEM;
@@ -597,6 +598,7 @@ error_buf_unmap:
dma_buf_unmap_attachment(attach, sgt, DMA_BIDIRECTIONAL);
error_buf_detach:
dma_buf_detach(dma_buf, attach);
+ dma_buf_put(dma_buf);
error_gem_free:
drm_gem_cma_free_object(&cma_obj->base);
return ERR_PTR(ret);
--
1.8.1.2
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