Re: [PATCH 1/3] drm/i915: drop redundant W=1 warnings from Makefile

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On Thu, 23 May 2024, Jani Nikula <jani.nikula@xxxxxxxxx> wrote:
> Since commit a61ddb4393ad ("drm: enable (most) W=1 warnings by default
> across the subsystem"), most of the extra warnings in the driver
> Makefile are redundant. Remove them.
>
> Note that -Wmissing-declarations and -Wmissing-prototypes are always
> enabled by default in scripts/Makefile.extrawarn.
>
> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>

Pushed this patch to drm-intel-next with Lucas' irc ack.

BR,
Jani.

> ---
>  drivers/gpu/drm/i915/Makefile | 25 +------------------------
>  1 file changed, 1 insertion(+), 24 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
> index 7cad944b825c..a70d95a8fd7a 100644
> --- a/drivers/gpu/drm/i915/Makefile
> +++ b/drivers/gpu/drm/i915/Makefile
> @@ -3,31 +3,8 @@
>  # Makefile for the drm device driver.  This driver provides support for the
>  # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
>  
> -# Unconditionally enable W=1 warnings locally
> -# --- begin copy-paste W=1 warnings from scripts/Makefile.extrawarn
> -subdir-ccflags-y += -Wextra -Wunused -Wno-unused-parameter
> -subdir-ccflags-y += -Wmissing-declarations
> -subdir-ccflags-y += $(call cc-option, -Wrestrict)
> -subdir-ccflags-y += -Wmissing-format-attribute
> -subdir-ccflags-y += -Wmissing-prototypes
> -subdir-ccflags-y += -Wold-style-definition
> -subdir-ccflags-y += -Wmissing-include-dirs
> -subdir-ccflags-y += $(call cc-option, -Wunused-but-set-variable)
> -subdir-ccflags-y += $(call cc-option, -Wunused-const-variable)
> -subdir-ccflags-y += $(call cc-option, -Wpacked-not-aligned)
> -subdir-ccflags-y += $(call cc-option, -Wformat-overflow)
> +# Enable W=1 warnings not enabled in drm subsystem Makefile
>  subdir-ccflags-y += $(call cc-option, -Wformat-truncation)
> -subdir-ccflags-y += $(call cc-option, -Wstringop-truncation)
> -# The following turn off the warnings enabled by -Wextra
> -ifeq ($(findstring 2, $(KBUILD_EXTRA_WARN)),)
> -subdir-ccflags-y += -Wno-missing-field-initializers
> -subdir-ccflags-y += -Wno-type-limits
> -subdir-ccflags-y += -Wno-shift-negative-value
> -endif
> -ifeq ($(findstring 3, $(KBUILD_EXTRA_WARN)),)
> -subdir-ccflags-y += -Wno-sign-compare
> -endif
> -# --- end copy-paste
>  
>  # Enable -Werror in CI and development
>  subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror

-- 
Jani Nikula, Intel



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