[PATCH] dma_buf: remove dmabuf sysfs teardown before release/detach
From: <hidden>
Date: 2021-07-19 05:19:53
Also in:
dri-devel, linux-media, linux-mediatek, lkml
Subsystem:
dma buffer sharing framework, the rest · Maintainers:
Sumit Semwal, Christian König, Linus Torvalds
From: Guangming Cao <redacted> 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 <redacted> --- 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
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