[PATCH] drm/amd/display: Disable -Wenum-float-conversion for dml2_dpmm_dcn4.c

[Alex Deucher]

On Thu, Dec 19, 2024 at 12:23 PM Nathan Chancellor <nathan at kernel.org> wrote:
>
> Commit be4e3509314a ("drm/amd/display: DML21 Reintegration For Various
> Fixes") blew away commit fdedd77b0eb3 ("drm/amd/display: Reapply
> 2fde4fdddc1f"), which itself was a reapplication for the same reason,
> which results in that compiler warning returning:
>
>   drivers/gpu/drm/amd/amdgpu/../display/dc/dml2/dml21/src/dml2_dpmm/dml2_dpmm_dcn4.c:215:58: error: arithmetic between enumeration type 'enum dentist_divider_range' and floating-point type 'double' [-Werror,-Wenum-float-conversion]
>     215 |         divider = (unsigned int)(DFS_DIVIDER_RANGE_SCALE_FACTOR * (vco_freq_khz / clock_khz));
>         |                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Just disable the warning for the whole file via Makefile to avoid having
> to reapply the same fix every time the code syncs from wherever it is
> actually maintained.
>
> Fixes: be4e3509314a ("drm/amd/display: DML21 Reintegration For Various Fixes")
> Signed-off-by: Nathan Chancellor <nathan at kernel.org>
> ---
> If you would prefer reapplying the local fix, feel free to do so, but I
> would like for it to be in the upstream source so it does not have to
> keep being applied.

I've reapplied the original fix and I've confirmed that the fix will
be pushed to the DML tree as well this time.

Thanks,

Alex

> ---
>  drivers/gpu/drm/amd/display/dc/dml2/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dml2/Makefile b/drivers/gpu/drm/amd/display/dc/dml2/Makefile
> index d9c27ebe12ee08d6330eb199cd8ca9c8489fa5b2..5c0f93644c5d43c8a0bc12713fc400712d8de50b 100644
> --- a/drivers/gpu/drm/amd/display/dc/dml2/Makefile
> +++ b/drivers/gpu/drm/amd/display/dc/dml2/Makefile
> @@ -78,7 +78,7 @@ CFLAGS_$(AMDDALPATH)/dc/dml2/dml21/src/dml2_top/dml2_top_soc15.o := $(dml2_ccfla
>  CFLAGS_$(AMDDALPATH)/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4.o := $(dml2_ccflags)
>  CFLAGS_$(AMDDALPATH)/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.o := $(dml2_ccflags) $(frame_warn_flag)
>  CFLAGS_$(AMDDALPATH)/dc/dml2/dml21/src/dml2_core/dml2_core_factory.o := $(dml2_ccflags)
> -CFLAGS_$(AMDDALPATH)/dc/dml2/dml21/src/dml2_dpmm/dml2_dpmm_dcn4.o := $(dml2_ccflags)
> +CFLAGS_$(AMDDALPATH)/dc/dml2/dml21/src/dml2_dpmm/dml2_dpmm_dcn4.o := $(dml2_ccflags) $(call cc-disable-warning,enum-float-conversion)
>  CFLAGS_$(AMDDALPATH)/dc/dml2/dml21/src/dml2_dpmm/dml2_dpmm_factory.o := $(dml2_ccflags)
>  CFLAGS_$(AMDDALPATH)/dc/dml2/dml21/src/dml2_mcg/dml2_mcg_dcn4.o := $(dml2_ccflags)
>  CFLAGS_$(AMDDALPATH)/dc/dml2/dml21/src/dml2_mcg/dml2_mcg_factory.o := $(dml2_ccflags)
>
> ---
> base-commit: 695c2c745e5dff201b75da8a1d237ce403600d04
> change-id: 20241219-amdgpu-fix-enum-float-conversion-again-again-cbfd9159f76d
>
> Best regards,
> --
> Nathan Chancellor <nathan at kernel.org>
>