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/counter/Makefile | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 tools/counter/Makefile (limited to 'tools/counter/Makefile') diff --git a/tools/counter/Makefile b/tools/counter/Makefile new file mode 100644 index 000000000..d82d35a52 --- /dev/null +++ b/tools/counter/Makefile @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: GPL-2.0 +include ../scripts/Makefile.include + +bindir ?= /usr/bin + +ifeq ($(srctree),) +srctree := $(patsubst %/,%,$(dir $(CURDIR))) +srctree := $(patsubst %/,%,$(dir $(srctree))) +endif + +# Do not use make's built-in rules +# (this improves performance and avoids hard-to-debug behaviour); +MAKEFLAGS += -r + +override CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include \ + -I$(srctree)/tools/include + +ALL_TARGETS := counter_example counter_watch_events +ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS)) + +all: $(ALL_PROGRAMS) + +export srctree OUTPUT CC LD CFLAGS +include $(srctree)/tools/build/Makefile.include + +# +# We need the following to be outside of kernel tree +# +$(OUTPUT)include/linux/counter.h: ../../include/uapi/linux/counter.h + mkdir -p $(OUTPUT)include/linux 2>&1 || true + ln -sf $(CURDIR)/../../include/uapi/linux/counter.h $@ + +prepare: $(OUTPUT)include/linux/counter.h + +COUNTER_EXAMPLE := $(OUTPUT)counter_example.o +$(COUNTER_EXAMPLE): prepare FORCE + $(Q)$(MAKE) $(build)=counter_example +$(OUTPUT)counter_example: $(COUNTER_EXAMPLE) + $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@ + +COUNTER_WATCH_EVENTS := $(OUTPUT)counter_watch_events.o +$(COUNTER_WATCH_EVENTS): prepare FORCE + $(Q)$(MAKE) $(build)=counter_watch_events +$(OUTPUT)counter_watch_events: $(COUNTER_WATCH_EVENTS) + $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@ + +clean: + rm -f $(ALL_PROGRAMS) + rm -rf $(OUTPUT)include/linux/counter.h + rm -df $(OUTPUT)include/linux + rm -df $(OUTPUT)include + find $(or $(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete + find $(or $(OUTPUT),.) -name '\.*.o.cmd' -delete + +install: $(ALL_PROGRAMS) + install -d -m 755 $(DESTDIR)$(bindir); \ + for program in $(ALL_PROGRAMS); do \ + install $$program $(DESTDIR)$(bindir); \ + done + +FORCE: + +.PHONY: all install clean FORCE prepare -- cgit v1.3.1