提交 c5e0ec66 编写于 作者: O Oded Gabbay

habanalabs: clear vm_pgoff before doing the mmap

The driver use vm_pgoff to hold the CB idr handle. Before we actually call
the mapping function, we need to clear the handle so there won't be any
garbage left in vm_pgoff.
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>
上级 3174ac9b
......@@ -304,7 +304,11 @@ int hl_cb_mmap(struct hl_fpriv *hpriv, struct vm_area_struct *vma)
u32 handle, user_cb_size;
int rc;
/* We use the page offset to hold the idr and thus we need to clear
* it before doing the mmap itself
*/
handle = vma->vm_pgoff;
vma->vm_pgoff = 0;
/* reference was taken here */
cb = hl_cb_get(hdev, &hpriv->cb_mgr, handle);
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册