From bce7698e2e6565bb765bd0522337f29f5f312624 Mon Sep 17 00:00:00 2001 From: Haojie Li Date: Tue, 25 Aug 2026 18:08:45 +0800 Subject: drm/mediatek: Add missing IS_ERR check for ovl_adaptor platform device platform_device_register_data() can fail and return an ERR_PTR, but the return value is used without checking, leading to an invalid pointer being stored in ddp_comp[].dev and passed to component_match_add() and mtk_ddp_comp_init(), which could result in a kernel crash. Add an IS_ERR() check to jump to the error handling path on failure. Fixes: 0d9eee9118b7 ("drm/mediatek: Add drm ovl_adaptor sub driver for MT8195") Cc: stable@vger.kernel.org Signed-off-by: Haojie Li Reviewed-by: CK Hu Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260825100845.438893-1-lihaojie@kylinos.cn/ Signed-off-by: Chun-Kuang Hu --- lib/kunit/device-impl.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 lib/kunit/device-impl.h (limited to 'lib/kunit/device-impl.h') diff --git a/lib/kunit/device-impl.h b/lib/kunit/device-impl.h new file mode 100644 index 000000000..5fcd48ff0 --- /dev/null +++ b/lib/kunit/device-impl.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * KUnit internal header for device helpers + * + * Header for KUnit-internal driver / bus management. + * + * Copyright (C) 2023, Google LLC. + * Author: David Gow + */ + +#ifndef _KUNIT_DEVICE_IMPL_H +#define _KUNIT_DEVICE_IMPL_H + +// For internal use only -- registers the kunit_bus. +int kunit_bus_init(void); +// For internal use only -- unregisters the kunit_bus. +void kunit_bus_shutdown(void); + +#endif //_KUNIT_DEVICE_IMPL_H -- cgit v1.3.1