Re: [PATCH -next] drm/amdgpu/display: fix build error without CONFIG_DRM_AMD_DC_DSC_SUPPORT

[Harry Wentland <hwentlan@amd.com>]

On 2019-08-26 4:57 a.m., YueHaibing wrote:
> If CONFIG_DRM_AMD_DC_DSC_SUPPORT is not set, build fails:
> 
> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn20/dcn20_hwseq.c: In function dcn20_hw_sequencer_construct:
> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn20/dcn20_hwseq.c:2099:28:
>  error: dcn20_dsc_pg_control undeclared (first use in this function); did you mean dcn20_dpp_pg_control?
>   dc->hwss.dsc_pg_control = dcn20_dsc_pg_control;
>                             ^~~~~~~~~~~~~~~~~~~~
>                             dcn20_dpp_pg_control
> 
> Use CONFIG_DRM_AMD_DC_DSC_SUPPORT to guard this.
> 
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Fixes: 8a31820b1218 ("drm/amd/display: Make init_hw and init_pipes generic for seamless boot")
> Signed-off-by: YueHaibing <yuehaibing@huawei.com>

Reviewed-by: Harry Wentland <harry.wentland@amd.com>

Harry

> ---
>  drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
> index e146d1d..54d67f6 100644
> --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
> +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
> @@ -2092,7 +2092,11 @@ void dcn20_hw_sequencer_construct(struct dc *dc)
>  	dc->hwss.enable_power_gating_plane = dcn20_enable_power_gating_plane;
>  	dc->hwss.dpp_pg_control = dcn20_dpp_pg_control;
>  	dc->hwss.hubp_pg_control = dcn20_hubp_pg_control;
> +#ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
>  	dc->hwss.dsc_pg_control = dcn20_dsc_pg_control;
> +#else
> +	dc->hwss.dsc_pg_control = NULL;
> +#endif
>  	dc->hwss.disable_vga = dcn20_disable_vga;
>  
>  	if (IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) {
>