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/perf/util/smt.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 tools/perf/util/smt.h (limited to 'tools/perf/util/smt.h') diff --git a/tools/perf/util/smt.h b/tools/perf/util/smt.h new file mode 100644 index 000000000..01441fd2c --- /dev/null +++ b/tools/perf/util/smt.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __SMT_H +#define __SMT_H 1 + +/* + * Returns true if SMT (aka hyperthreading) is enabled. Determined via sysfs or + * the online topology. + */ +bool smt_on(void); + +/* + * Returns true when system wide and all SMT threads for a core are in the + * user_requested_cpus map. + */ +bool core_wide(bool system_wide, const char *user_requested_cpu_list); + +#endif /* __SMT_H */ -- cgit v1.3.1