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/power/acpi/Makefile.rules | 49 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 tools/power/acpi/Makefile.rules (limited to 'tools/power/acpi/Makefile.rules') diff --git a/tools/power/acpi/Makefile.rules b/tools/power/acpi/Makefile.rules new file mode 100644 index 000000000..b71aada77 --- /dev/null +++ b/tools/power/acpi/Makefile.rules @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: GPL-2.0-only +# tools/power/acpi/Makefile.rules - ACPI tool Makefile +# +# Copyright (c) 2015, Intel Corporation +# Author: Lv Zheng +# + +objdir := $(OUTPUT)tools/$(TOOL)/ +toolobjs := $(addprefix $(objdir),$(TOOL_OBJS)) +$(OUTPUT)$(TOOL): $(toolobjs) FORCE + $(ECHO) " LD " $(subst $(OUTPUT),,$@) + $(QUIET) $(LD) $(CFLAGS) $(toolobjs) $(LDFLAGS) -L$(OUTPUT) -o $@ + $(ECHO) " STRIP " $(subst $(OUTPUT),,$@) + $(QUIET) $(STRIPCMD) $@ + +$(KERNEL_INCLUDE): + $(ECHO) " MKDIR " $(subst $(OUTPUT),,$@) + $(QUIET) mkdir -p $(KERNEL_INCLUDE) + $(ECHO) " CP " $(subst $(OUTPUT),,$@) + $(QUIET) cp -rf $(srctree)/../../../include/acpi $(KERNEL_INCLUDE)/ + +$(objdir)%.o: %.c $(KERNEL_INCLUDE) + $(ECHO) " CC " $(subst $(OUTPUT),,$@) + $(QUIET) $(MKDIR) -p $(objdir) 2>/dev/null + $(QUIET) $(CC) -c $(CFLAGS) -o $@ $< + +all: $(OUTPUT)$(TOOL) +clean: + $(ECHO) " RMOBJ " $(subst $(OUTPUT),,$(objdir)) + $(QUIET) find $(objdir) \( -not -type d \)\ + -and \( -name '*~' -o -name '*.[oas]' \)\ + -type f -print | xargs rm -f + $(ECHO) " RM " $(TOOL) + $(QUIET) rm -f $(OUTPUT)$(TOOL) + $(ECHO) " RMINC " $(subst $(OUTPUT),,$(KERNEL_INCLUDE)) + $(QUIET) rm -rf $(KERNEL_INCLUDE) + +install-tools: + $(ECHO) " INST " $(TOOL) + $(QUIET) $(INSTALL) -d $(DESTDIR)$(sbindir) + $(QUIET) $(INSTALL_PROGRAM) $(OUTPUT)$(TOOL) $(DESTDIR)$(sbindir) +uninstall-tools: + $(ECHO) " UNINST " $(TOOL) + $(QUIET) rm -f $(DESTDIR)$(sbindir)/$(TOOL) + +install: all install-tools $(EXTRA_INSTALL) +uninstall: uninstall-tools $(EXTRA_UNINSTALL) + +.PHONY: FORCE -- cgit v1.3.1