[PATCH 4/4] drm: enable -Wformat-truncation across the subsystem

[Sam Ravnborg]

Hi Jani,

On Thu, May 23, 2024 at 06:51:09PM +0300, Jani Nikula wrote:
> With the -Wformat-truncation warnings fixed, finish the job started in
> commit a61ddb4393ad ("drm: enable (most) W=1 warnings by default across
> the subsystem"), and enable that warning too.
> 
> Signed-off-by: Jani Nikula <jani.nikula at intel.com>

When it is enabled for all of drm then the explicit assignments here
could be dropped I think:

drivers/gpu/drm/i915/Makefile:subdir-ccflags-y += $(call cc-option, -Wformat-truncation)
drivers/gpu/drm/xe/Makefile:subdir-ccflags-y += $(call cc-option, -Wformat-truncation)

Just a drive-by comment, I know this patch was mostly for the bots.

	Sam

> 
> ---
> 
> Gut feeling says there are more issues, and my configs just don't catch
> them all, but let's see what the build bots have to say. ;)
> ---
>  drivers/gpu/drm/Makefile | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> index 68cc9258ffc4..644613dbedda 100644
> --- a/drivers/gpu/drm/Makefile
> +++ b/drivers/gpu/drm/Makefile
> @@ -16,8 +16,7 @@ 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)
> -# FIXME: fix -Wformat-truncation warnings and uncomment
> -#subdir-ccflags-y += $(call cc-option, -Wformat-truncation)
> +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)),)
> -- 
> 2.39.2