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drm: Add CONFIG_DRM_WERROR

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Add kconfig to enable -Werror subsystem wide. This is useful for
development and CI to keep the subsystem warning free, while avoiding
issues outside of the subsystem that kernel wide CONFIG_WERROR=y might
hit.

v2: Don't depend on COMPILE_TEST

Reviewed-by: Hamza Mahfooz <hamza.mahfooz@amd.com> # v1
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/afe5ed943414f7ec3044c1547503b9941686a867.1709629403.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Jani Nikula 2024-03-05 11:07:36 +02:00
parent a61ddb4393
commit f89632a9e5
2 changed files with 16 additions and 0 deletions
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13
drivers/gpu/drm/Kconfig
View file

@ -415,3 +415,16 @@ config DRM_LIB_RANDOM
config DRM_PRIVACY_SCREEN config DRM_PRIVACY_SCREEN
bool bool
default n default n
config DRM_WERROR
bool "Compile the drm subsystem with warnings as errors"
depends on EXPERT
default n
help
A kernel build should not cause any compiler warnings, and this
enables the '-Werror' flag to enforce that rule in the drm subsystem.
The drm subsystem enables more warnings than the kernel default, so
this config option is disabled by default.
If in doubt, say N.

3
drivers/gpu/drm/Makefile
View file

@ -30,6 +30,9 @@ subdir-ccflags-y += -Wno-sign-compare
endif endif
# --- end copy-paste # --- end copy-paste
# Enable -Werror in CI and development
subdir-ccflags-$(CONFIG_DRM_WERROR) += -Werror
drm-y := \ drm-y := \
drm_aperture.o \ drm_aperture.o \
drm_atomic.o \ drm_atomic.o \