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, 41 insertions, 0 deletions

diff --git a/tools/include/nolibc/arch.h b/tools/include/nolibc/arch.h
new file mode 100644
index 000000000..06cc2dbe7
--- /dev/null
+++ b/tools/include/nolibc/arch.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
+/*
+ * Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>
+ */
+
+#ifndef _NOLIBC_ARCH_H
+#define _NOLIBC_ARCH_H
+
+#if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
+#include "arch-x86.h"
+#elif defined(__ARM_EABI__)
+#include "arch-arm.h"
+#elif defined(__aarch64__)
+#include "arch-arm64.h"
+#elif defined(__mips__)
+#include "arch-mips.h"
+#elif defined(__powerpc__)
+#include "arch-powerpc.h"
+#elif defined(__riscv)
+#include "arch-riscv.h"
+#elif defined(__s390x__)
+#include "arch-s390.h"
+#elif defined(__loongarch__)
+#include "arch-loongarch.h"
+#elif defined(__sparc__)
+#include "arch-sparc.h"
+#elif defined(__m68k__)
+#include "arch-m68k.h"
+#elif defined(__sh__)
+#include "arch-sh.h"
+#elif defined(__or1k__)
+#include "arch-openrisc.h"
+#elif defined(__hppa__)
+#include "arch-parisc.h"
+#elif defined(__alpha__)
+#include "arch-alpha.h"
+#else
+#error Unsupported Architecture
+#endif
+
+#endif /* _NOLIBC_ARCH_H */