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/thermal/lib/log.c | 77 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 tools/thermal/lib/log.c (limited to 'tools/thermal/lib/log.c') diff --git a/tools/thermal/lib/log.c b/tools/thermal/lib/log.c new file mode 100644 index 000000000..597d6e7f7 --- /dev/null +++ b/tools/thermal/lib/log.c @@ -0,0 +1,77 @@ +// SPDX-License-Identifier: LGPL-2.1+ +// Copyright (C) 2022, Linaro Ltd - Daniel Lezcano +#include +#include +#include +#include +#include "log.h" + +static const char *__ident = "unknown"; +static int __options; + +static const char * const loglvl[] = { + [LOG_DEBUG] = "DEBUG", + [LOG_INFO] = "INFO", + [LOG_NOTICE] = "NOTICE", + [LOG_WARNING] = "WARN", + [LOG_ERR] = "ERROR", + [LOG_CRIT] = "CRITICAL", + [LOG_ALERT] = "ALERT", + [LOG_EMERG] = "EMERG", +}; + +int log_str2level(const char *lvl) +{ + int i; + + for (i = 0; i < sizeof(loglvl) / sizeof(loglvl[LOG_DEBUG]); i++) + if (!strcmp(lvl, loglvl[i])) + return i; + + return LOG_DEBUG; +} + +extern void logit(int level, const char *format, ...) +{ + va_list args; + + va_start(args, format); + + if (__options & TO_SYSLOG) + vsyslog(level, format, args); + + if (__options & TO_STDERR) + vfprintf(stderr, format, args); + + if (__options & TO_STDOUT) + vfprintf(stdout, format, args); + + va_end(args); +} + +int log_init(int level, const char *ident, int options) +{ + if (!options) + return -1; + + if (level > LOG_DEBUG) + return -1; + + if (!ident) + return -1; + + __ident = ident; + __options = options; + + if (options & TO_SYSLOG) { + openlog(__ident, options | LOG_NDELAY, LOG_USER); + setlogmask(LOG_UPTO(level)); + } + + return 0; +} + +void log_exit(void) +{ + closelog(); +} -- cgit v1.3.1