[PATCH 3/4] uacce: implement mremap in uacce_vm_ops to return -EPERM

[Chenghai Huang <huangchenghai2@huawei.com>]

From: Yang Shen <shenyang39@huawei.com>

The current uacce_vm_ops does not support the mremap operation of
vm_operations_struct. Implement .mremap to return -EPERM to remind
users

Fixes: 015d239ac014 ("uacce: add uacce driver")
Signed-off-by: Yang Shen <shenyang39@huawei.com>
Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
---
 drivers/misc/uacce/uacce.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/misc/uacce/uacce.c b/drivers/misc/uacce/uacce.c
index 6a38809ca819..531a24145ba4 100644
--- a/drivers/misc/uacce/uacce.c
+++ b/drivers/misc/uacce/uacce.c
@@ -214,8 +214,14 @@ static void uacce_vma_close(struct vm_area_struct *vma)
 	}
 }
 
+static int uacce_vma_mremap(struct vm_area_struct *area)
+{
+	return -EPERM;
+}
+
 static const struct vm_operations_struct uacce_vm_ops = {
 	.close = uacce_vma_close,
+	.mremap = uacce_vma_mremap,
 };
 
 static int uacce_fops_mmap(struct file *filep, struct vm_area_struct *vma)
-- 
2.33.0