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 --- tools/include/nolibc/math.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 tools/include/nolibc/math.h (limited to 'tools/include/nolibc/math.h') diff --git a/tools/include/nolibc/math.h b/tools/include/nolibc/math.h new file mode 100644 index 000000000..9df823ddd --- /dev/null +++ b/tools/include/nolibc/math.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: LGPL-2.1 OR MIT */ +/* + * math definitions for NOLIBC + * Copyright (C) 2025 Thomas Weißschuh + */ + +/* make sure to include all global symbols */ +#include "nolibc.h" + +#ifndef _NOLIBC_SYS_MATH_H +#define _NOLIBC_SYS_MATH_H + +static __inline__ +double fabs(double x) +{ + return x >= 0 ? x : -x; +} + +static __inline__ +float fabsf(float x) +{ + return x >= 0 ? x : -x; +} + +static __inline__ +long double fabsl(long double x) +{ + return x >= 0 ? x : -x; +} + +#endif /* _NOLIBC_SYS_MATH_H */ -- cgit v1.3.1