linux-kernel - [PATCH] arm/arm64: samsung: Enable W=1 on dtbs by default

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Message-ID: <20231116211739.3228239-1-robh@kernel.org>
Date:   Thu, 16 Nov 2023 15:17:38 -0600
From:   Rob Herring <robh@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] arm/arm64: samsung: Enable W=1 on dtbs by default

Samsung platforms are clean of W=1 dtc warnings, so enable the warnings
by default. This way submitters don't have to remember to run a W=1
build of the .dts files and the grumpiness of the maintainers can be
reduced.

Signed-off-by: Rob Herring <robh@...nel.org>
---
Well, there's a couple of warnings on 32-bit, but they look fixable to
me.

There's a few other platforms we could do this to. Sadly, they are still
the minority. Otherwise, we could change the default and add a flag to
disable (I_STILL_HAVENT_FIXED_MY_PLATFORMS=1).
---
 arch/arm/boot/dts/samsung/Makefile  | 3 +++
 arch/arm64/boot/dts/exynos/Makefile | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/arch/arm/boot/dts/samsung/Makefile b/arch/arm/boot/dts/samsung/Makefile
index 7becf36656b1..b6a0e2beac00 100644
--- a/arch/arm/boot/dts/samsung/Makefile
+++ b/arch/arm/boot/dts/samsung/Makefile
@@ -1,4 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
+
+KBUILD_EXTRA_WARN=1
+
 dtb-$(CONFIG_ARCH_EXYNOS3) += \
 	exynos3250-artik5-eval.dtb \
 	exynos3250-monk.dtb \
diff --git a/arch/arm64/boot/dts/exynos/Makefile b/arch/arm64/boot/dts/exynos/Makefile
index 6e4ba69268e5..45c996fba5e4 100644
--- a/arch/arm64/boot/dts/exynos/Makefile
+++ b/arch/arm64/boot/dts/exynos/Makefile
@@ -1,4 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0
+
+KBUILD_EXTRA_WARN=1
+DTC_FLAGS += -Wno-graph_child_address
+
 dtb-$(CONFIG_ARCH_EXYNOS) += \
 	exynos5433-tm2.dtb		\
 	exynos5433-tm2e.dtb		\
-- 
2.42.0