drm/mediatek: Add missing IS_ERR check for ovl_adaptor platform devicegrafted

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 <lihaojie@kylinos.cn>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260825100845.438893-1-lihaojie@kylinos.cn/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/tools/perf/util/intel-tpebs.h b/tools/perf/util/intel-tpebs.h
new file mode 100644
index 000000000..9475e2e6e
--- /dev/null
+++ b/tools/perf/util/intel-tpebs.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * intel_tpebs.h: Intel TEPBS support
+ */
+#ifndef __INTEL_TPEBS_H
+#define __INTEL_TPEBS_H
+
+struct evlist;
+struct evsel;
+
+enum tpebs_mode {
+	TPEBS_MODE__MEAN,
+	TPEBS_MODE__MIN,
+	TPEBS_MODE__MAX,
+	TPEBS_MODE__LAST,
+};
+
+extern bool tpebs_recording;
+extern enum tpebs_mode tpebs_mode;
+
+int evsel__tpebs_open(struct evsel *evsel);
+void evsel__tpebs_close(struct evsel *evsel);
+int evsel__tpebs_read(struct evsel *evsel, int cpu_map_idx, int thread);
+
+#endif /* __INTEL_TPEBS_H */