[PATCH] dma_buf: remove dmabuf sysfs teardown before release/detach

[guangming.cao]

From: Guangming Cao <guangming....@mediatek.com>

Dmabuf sysfs stat is used for dmabuf info track.
but these file maybe still use after buffer release/detach,
should clear it before buffer release/detach.

Signed-off-by: Guangming Cao <guangming....@mediatek.com>
---
 drivers/dma-buf/dma-buf.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 510b42771974..9fa4620bd4bb 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -76,12 +76,12 @@ static void dma_buf_release(struct dentry *dentry)
         */
        BUG_ON(dmabuf->cb_shared.active || dmabuf->cb_excl.active);
 
+       dma_buf_stats_teardown(dmabuf);
        dmabuf->ops->release(dmabuf);
 
        if (dmabuf->resv == (struct dma_resv *)&dmabuf[1])
                dma_resv_fini(dmabuf->resv);
 
-       dma_buf_stats_teardown(dmabuf);
        module_put(dmabuf->owner);
        kfree(dmabuf->name);
        kfree(dmabuf);
@@ -875,10 +875,11 @@ void dma_buf_detach(struct dma_buf *dmabuf, struct 
dma_buf_attachment *attach)
        dma_resv_lock(dmabuf->resv, NULL);
        list_del(&attach->node);
        dma_resv_unlock(dmabuf->resv);
+
+       dma_buf_attach_stats_teardown(attach);
        if (dmabuf->ops->detach)
                dmabuf->ops->detach(dmabuf, attach);
 
-       dma_buf_attach_stats_teardown(attach);
        kfree(attach);
 }
 EXPORT_SYMBOL_GPL(dma_buf_detach);
-- 
2.17.1