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| author | Alexandre Torgue <alexandre.torgue@foss.st.com> | 2022-10-21 11:44:47 +0300 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2022-10-22 00:02:05 +0300 |
| commit | ae5a16c8da92f511fe633d0872043cd317966092 (patch) | |
| tree | 80e47591b73b2e29b99d47536a65cb81a16a158e /scripts | |
| parent | 33ce453cad470ffd92ba79534dc67946b64d13b2 (diff) | |
| download | linux-ae5a16c8da92f511fe633d0872043cd317966092.tar.xz | |
scripts: dtc: only show unique unit address warning for enabled nodes
In some cases an hardware peripheral can be used for two exclusive usages.
For example, on STM32MP15 we have the same peripheral for I2S and SPI. We
have dedicated driver for each usage and so a dedicated device node in
devicetree.
To avoid to get useless warnings running "make W=1 dtbs", this patch adds
the "-Wunique_unit_address_if_enabled" flag for a make with W=1. In this
case we will detect a duplicate address only if both devices are
enabled in the devicetree, which is a real error case.
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
Link: https://lore.kernel.org/r/20221021084447.5550-1-alexandre.torgue@foss.st.com
[robh: Refactor options and keep 'unique_unit_address' for W=2]
Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/Makefile.lib | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 3aa384cec76b..969de3b7bb30 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -334,7 +334,8 @@ quiet_cmd_gzip = GZIP $@ # DTC # --------------------------------------------------------------------------- DTC ?= $(objtree)/scripts/dtc/dtc -DTC_FLAGS += -Wno-interrupt_provider +DTC_FLAGS += -Wno-interrupt_provider \ + -Wno-unique_unit_address # Disable noisy checks by default ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),) @@ -342,14 +343,17 @@ DTC_FLAGS += -Wno-unit_address_vs_reg \ -Wno-avoid_unnecessary_addr_size \ -Wno-alias_paths \ -Wno-graph_child_address \ - -Wno-simple_bus_reg \ - -Wno-unique_unit_address + -Wno-simple_bus_reg +else +DTC_FLAGS += \ + -Wunique_unit_address_if_enabled endif ifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),) DTC_FLAGS += -Wnode_name_chars_strict \ -Wproperty_name_chars_strict \ - -Winterrupt_provider + -Winterrupt_provider \ + -Wunique_unit_address endif DTC_FLAGS += $(DTC_FLAGS_$(basetarget)) |