From 7c86d0dc46f5f4589d8abfedd4027aca88c0f748 Mon Sep 17 00:00:00 2001
From: Shuangjie Lin <shuangjie.lin@rock-chips.com>
Date: Sun, 27 Apr 2025 16:00:33 +0800
Subject: [PATCH] driver: rknpu: Fix missing misc_deregister() on dma heap open
 failure

Signed-off-by: Shuangjie Lin <shuangjie.lin@rock-chips.com>
Change-Id: I8e0f622cb5090b2eae0ac819b4bfb78e35ada261
---
 drivers/rknpu/rknpu_drv.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/rknpu/rknpu_drv.c b/drivers/rknpu/rknpu_drv.c
index 055e20177401..9e6f1d28a55c 100644
--- a/drivers/rknpu/rknpu_drv.c
+++ b/drivers/rknpu/rknpu_drv.c
@@ -1451,6 +1451,7 @@ static int rknpu_probe(struct platform_device *pdev)
 	rknpu_dev->heap = rk_dma_heap_find("rk-dma-heap-cma");
 	if (!rknpu_dev->heap) {
 		LOG_DEV_ERROR(dev, "failed to find cma heap\n");
+		misc_deregister(&rknpu_dev->miscdev);
 		return -ENOMEM;
 	}
 	rk_dma_heap_set_dev(dev);