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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c 
 kernel/drivers/base/arm/Makefile
....@@ -1,6 +1,6 @@
11 # SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
22 #
3
-# (C) COPYRIGHT 2021 ARM Limited. All rights reserved.
3
+# (C) COPYRIGHT 2021-2022 ARM Limited. All rights reserved.
44 #
55 # This program is free software and is provided to you under the terms of the
66 # GNU General Public License version 2 as published by the Free Software
....@@ -63,7 +63,7 @@
6363     CONFIG_MALI_CSF_SUPPORT \
6464     CONFIG_DMA_SHARED_BUFFER_TEST_EXPORTER \
6565     CONFIG_MALI_MEMORY_GROUP_MANAGER \
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-    CONFIG_MALI_PROTECTED_MEMORY_ALLOCATOR
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+    CONFIG_MALI_PROTECTED_MEMORY_ALLOCATOR \
6767 
6868 
6969 #
....@@ -88,6 +88,60 @@
8888                     $(if $(filter y m,$(value $(value config))), \
8989                         -D$(value config)=1))
9090 
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+KBUILD_CFLAGS += -Wall -Werror
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+
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+ifeq ($(CONFIG_GCOV_KERNEL), y)
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+    KBUILD_CFLAGS += $(call cc-option, -ftest-coverage)
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+    KBUILD_CFLAGS += $(call cc-option, -fprofile-arcs)
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+    EXTRA_CFLAGS += -DGCOV_PROFILE=1
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+endif
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+
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+ifeq ($(CONFIG_MALI_KCOV),y)
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+    KBUILD_CFLAGS += $(call cc-option, -fsanitize-coverage=trace-cmp)
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+    EXTRA_CFLAGS += -DKCOV=1
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+    EXTRA_CFLAGS += -DKCOV_ENABLE_COMPARISONS=1
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+endif
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+
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+# The following were added to align with W=1 in scripts/Makefile.extrawarn
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+# from the Linux source tree (v5.18.14)
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+KBUILD_CFLAGS += -Wextra -Wunused -Wno-unused-parameter
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+KBUILD_CFLAGS += -Wmissing-declarations
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+KBUILD_CFLAGS += -Wmissing-format-attribute
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+KBUILD_CFLAGS += -Wmissing-prototypes
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+KBUILD_CFLAGS += -Wold-style-definition
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+# The -Wmissing-include-dirs cannot be enabled as the path to some of the
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+# included directories change depending on whether it is an in-tree or
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+# out-of-tree build.
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+KBUILD_CFLAGS += $(call cc-option, -Wunused-but-set-variable)
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+KBUILD_CFLAGS += $(call cc-option, -Wunused-const-variable)
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+KBUILD_CFLAGS += $(call cc-option, -Wpacked-not-aligned)
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+KBUILD_CFLAGS += $(call cc-option, -Wstringop-truncation)
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+# The following turn off the warnings enabled by -Wextra
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+KBUILD_CFLAGS += -Wno-sign-compare
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+KBUILD_CFLAGS += -Wno-shift-negative-value
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+# This flag is needed to avoid build errors on older kernels
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+KBUILD_CFLAGS += $(call cc-option, -Wno-cast-function-type)
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+
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+KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN1
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+
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+# The following were added to align with W=2 in scripts/Makefile.extrawarn
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+# from the Linux source tree (v5.18.14)
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+KBUILD_CFLAGS += -Wdisabled-optimization
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+# The -Wshadow flag cannot be enabled unless upstream kernels are
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+# patched to fix redefinitions of certain built-in functions and
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+# global variables.
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+KBUILD_CFLAGS += $(call cc-option, -Wlogical-op)
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+KBUILD_CFLAGS += -Wmissing-field-initializers
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+# -Wtype-limits must be disabled due to build failures on kernel 5.x
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+KBUILD_CFLAGS += -Wno-type-limit
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+KBUILD_CFLAGS += $(call cc-option, -Wmaybe-uninitialized)
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+KBUILD_CFLAGS += $(call cc-option, -Wunused-macros)
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+
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+KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN2
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+
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+# This warning is disabled to avoid build failures in some kernel versions
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+KBUILD_CFLAGS += -Wno-ignored-qualifiers
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+
91145 all:
92146 	$(MAKE) -C $(KDIR) M=$(CURDIR) $(MAKE_ARGS) EXTRA_CFLAGS="$(EXTRA_CFLAGS)" KBUILD_EXTRA_SYMBOLS="$(EXTRA_SYMBOLS)" modules
93147