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/compress.h | 93 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 tools/perf/util/compress.h (limited to 'tools/perf/util/compress.h') diff --git a/tools/perf/util/compress.h b/tools/perf/util/compress.h new file mode 100644 index 000000000..ec6c38129 --- /dev/null +++ b/tools/perf/util/compress.h @@ -0,0 +1,93 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef PERF_COMPRESS_H +#define PERF_COMPRESS_H + +#include +#include +#include +#include +#include +#ifdef HAVE_ZSTD_SUPPORT +#include +#endif + +#ifdef HAVE_ZLIB_SUPPORT +int gzip_decompress_to_file(const char *input, int output_fd); +bool gzip_is_compressed(const char *input); +#endif + +#ifdef HAVE_LZMA_SUPPORT +int lzma_decompress_stream_to_file(FILE *input, int output_fd); +int lzma_decompress_to_file(const char *input, int output_fd); +bool lzma_is_compressed(const char *input); +#else +static inline +int lzma_decompress_stream_to_file(FILE *input __maybe_unused, + int output_fd __maybe_unused) +{ + return -1; +} +static inline +int lzma_decompress_to_file(const char *input __maybe_unused, + int output_fd __maybe_unused) +{ + return -1; +} +static inline int lzma_is_compressed(const char *input __maybe_unused) +{ + return false; +} +#endif + +struct zstd_data { +#ifdef HAVE_ZSTD_SUPPORT + ZSTD_CStream *cstream; + ZSTD_DStream *dstream; + int comp_level; +#endif +}; + +#ifdef HAVE_ZSTD_SUPPORT + +int zstd_init(struct zstd_data *data, int level); +int zstd_fini(struct zstd_data *data); + +ssize_t zstd_compress_stream_to_records(struct zstd_data *data, void *dst, size_t dst_size, + void *src, size_t src_size, size_t max_record_size, + ssize_t process_header(void *record, size_t dst_size, + size_t data_size)); + +size_t zstd_decompress_stream(struct zstd_data *data, void *src, size_t src_size, + void *dst, size_t dst_size); +#else /* !HAVE_ZSTD_SUPPORT */ + +static inline int zstd_init(struct zstd_data *data __maybe_unused, int level __maybe_unused) +{ + return 0; +} + +static inline int zstd_fini(struct zstd_data *data __maybe_unused) +{ + return 0; +} + +static inline +ssize_t zstd_compress_stream_to_records(struct zstd_data *data __maybe_unused, + void *dst __maybe_unused, size_t dst_size __maybe_unused, + void *src __maybe_unused, size_t src_size __maybe_unused, + size_t max_record_size __maybe_unused, + ssize_t process_header(void *record, size_t dst_size, + size_t data_size) __maybe_unused) +{ + return 0; +} + +static inline size_t zstd_decompress_stream(struct zstd_data *data __maybe_unused, void *src __maybe_unused, + size_t src_size __maybe_unused, void *dst __maybe_unused, + size_t dst_size __maybe_unused) +{ + return 0; +} +#endif + +#endif /* PERF_COMPRESS_H */ -- cgit v1.3.1