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53 lines
1.9 KiB
Diff
53 lines
1.9 KiB
Diff
Revert the commit c0e032e0090d65 ("scripts/dtc: Update to upstream
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version v1.4.3")
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OpenWrt uses the dtc from the kernel also in u-boot, but when we compile
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against kernel 4.9 we run into some errors because it is too old now.
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Add the options only when they are supported to make it compatible with
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dtc from kernel 4.9.
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--- a/scripts/Kbuild.include
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+++ b/scripts/Kbuild.include
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@@ -173,6 +173,11 @@ ld-version = $(shell $(LD) --version | $
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# Usage: $(call ld-ifversion, -ge, 22252, y)
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ld-ifversion = $(shell [ $(ld-version) $(1) $(2) ] && echo $(3) || echo $(4))
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+# dtc-option
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+# Usage: DTC_FLAGS += $(call dtc-option,-Wno-unit_address_vs_reg)
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+dtc-option = $(call try-run,\
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+ echo '/dts-v1/; / {};' | $(DTC) $(1),$(1),$(2))
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+
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######
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###
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--- a/scripts/Makefile.extrawarn
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+++ b/scripts/Makefile.extrawarn
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@@ -56,8 +56,8 @@ endif
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KBUILD_CFLAGS += $(warning)
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-dtc-warning-2 += -Wnode_name_chars_strict
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-dtc-warning-2 += -Wproperty_name_chars_strict
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+dtc-warning-2 += $(call dtc-option,-Wnode_name_chars_strict)
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+dtc-warning-2 += $(call dtc-option,-Wproperty_name_chars_strict)
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dtc-warning := $(dtc-warning-$(findstring 1, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
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dtc-warning += $(dtc-warning-$(findstring 2, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
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@@ -68,11 +68,11 @@ DTC_FLAGS += $(dtc-warning)
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else
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# Disable noisy checks by default
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-DTC_FLAGS += -Wno-unit_address_vs_reg
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-DTC_FLAGS += -Wno-simple_bus_reg
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-DTC_FLAGS += -Wno-unit_address_format
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-DTC_FLAGS += -Wno-pci_bridge
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-DTC_FLAGS += -Wno-pci_device_bus_num
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-DTC_FLAGS += -Wno-pci_device_reg
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+DTC_FLAGS += $(call dtc-option,-Wno-unit_address_vs_reg)
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+DTC_FLAGS += $(call dtc-option,-Wno-simple_bus_reg)
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+DTC_FLAGS += $(call dtc-option,-Wno-unit_address_format)
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+DTC_FLAGS += $(call dtc-option,-Wno-pci_bridge)
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+DTC_FLAGS += $(call dtc-option,-Wno-pci_device_bus_num)
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+DTC_FLAGS += $(call dtc-option,-Wno-pci_device_reg)
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endif
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