diff --git a/drivers/dma/idxd/cdev.c b/drivers/dma/idxd/cdev.c
index a2fb2b847752..6d12033649f8 100644
--- a/drivers/dma/idxd/cdev.c
+++ b/drivers/dma/idxd/cdev.c
@@ -500,7 +500,7 @@ static __poll_t idxd_cdev_poll(struct file *filp,
 	__poll_t out = 0;
 
 	if (current->mm != ctx->mm)
-		return -EPERM;
+		return POLLNVAL;
 
 	poll_wait(filp, &wq->err_queue, wait);
 	spin_lock(&idxd->dev_lock);