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/lib/api/debug-internal.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 tools/lib/api/debug-internal.h (limited to 'tools/lib/api/debug-internal.h') diff --git a/tools/lib/api/debug-internal.h b/tools/lib/api/debug-internal.h new file mode 100644 index 000000000..5a5820c11 --- /dev/null +++ b/tools/lib/api/debug-internal.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __API_DEBUG_INTERNAL_H__ +#define __API_DEBUG_INTERNAL_H__ + +#include "debug.h" + +#define __pr(func, fmt, ...) \ +do { \ + if ((func)) \ + (func)("libapi: " fmt, ##__VA_ARGS__); \ +} while (0) + +extern libapi_print_fn_t __pr_warn; +extern libapi_print_fn_t __pr_info; +extern libapi_print_fn_t __pr_debug; + +#define pr_warn(fmt, ...) __pr(__pr_warn, fmt, ##__VA_ARGS__) +#define pr_info(fmt, ...) __pr(__pr_info, fmt, ##__VA_ARGS__) +#define pr_debug(fmt, ...) __pr(__pr_debug, fmt, ##__VA_ARGS__) + +#endif /* __API_DEBUG_INTERNAL_H__ */ -- cgit v1.3.1