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/time-utils.h | 51 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 tools/perf/util/time-utils.h (limited to 'tools/perf/util/time-utils.h') diff --git a/tools/perf/util/time-utils.h b/tools/perf/util/time-utils.h new file mode 100644 index 000000000..1142b0bdd --- /dev/null +++ b/tools/perf/util/time-utils.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _TIME_UTILS_H_ +#define _TIME_UTILS_H_ + +#include +#include +#include + +struct perf_time_interval { + u64 start, end; +}; + +int parse_nsec_time(const char *str, u64 *ptime); + +int perf_time__parse_str(struct perf_time_interval *ptime, const char *ostr); + +int perf_time__percent_parse_str(struct perf_time_interval *ptime_buf, int num, + const char *ostr, u64 start, u64 end); + +struct perf_time_interval *perf_time__range_alloc(const char *ostr, int *size); + +bool perf_time__skip_sample(struct perf_time_interval *ptime, u64 timestamp); + +bool perf_time__ranges_skip_sample(struct perf_time_interval *ptime_buf, + int num, u64 timestamp); + +struct perf_session; + +int perf_time__parse_for_ranges_reltime(const char *str, struct perf_session *session, + struct perf_time_interval **ranges, + int *range_size, int *range_num, + bool reltime); + +int perf_time__parse_for_ranges(const char *str, struct perf_session *session, + struct perf_time_interval **ranges, + int *range_size, int *range_num); + +int timestamp__scnprintf_usec(u64 timestamp, char *buf, size_t sz); +int timestamp__scnprintf_nsec(u64 timestamp, char *buf, size_t sz); + +int fetch_current_timestamp(char *buf, size_t sz); + +static inline unsigned long long rdclock(void) +{ + struct timespec ts; + + clock_gettime(CLOCK_MONOTONIC, &ts); + return ts.tv_sec * 1000000000ULL + ts.tv_nsec; +} + +#endif -- cgit v1.3.1