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/asm/alternative.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 tools/include/asm/alternative.h (limited to 'tools/include/asm/alternative.h') diff --git a/tools/include/asm/alternative.h b/tools/include/asm/alternative.h new file mode 100644 index 000000000..8e548ac8f --- /dev/null +++ b/tools/include/asm/alternative.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _TOOLS_ASM_ALTERNATIVE_ASM_H +#define _TOOLS_ASM_ALTERNATIVE_ASM_H + +#if defined(__s390x__) +#ifdef __ASSEMBLY__ +.macro ALTERNATIVE oldinstr, newinstr, feature + \oldinstr +.endm +#endif +#else + +/* Just disable it so we can build arch/x86/lib/memcpy_64.S for perf bench: */ + +#define ALTERNATIVE # + +#endif + +#endif -- cgit v1.3.1