[Nouveau] [PATCH] drm/nouveau: Make clock gate support conditional

[Lyude Paul]

Reviewed-by: Lyude Paul <lyude at redhat.com>

On Wed, 2018-02-07 at 18:40 +0100, Thierry Reding wrote:
> From: Thierry Reding <treding at nvidia.com>
> 
> The recently introduced clock gate support breaks on Tegra chips because
> no thermal support is enabled for those devices. Conditionalize the code
> on the existence of thermal support to fix this.
> 
> Fixes: b138eca661cc ("drm/nouveau: Add support for basic clockgating on
> Kepler1")
> Cc: Martin Peres <martin.peres at free.fr>
> Cc: Lyude Paul <lyude at redhat.com>
> Signed-off-by: Thierry Reding <treding at nvidia.com>
> ---
>  drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
> b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
> index bf62303571b3..3695cde669f8 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
> +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
> @@ -301,7 +301,7 @@ nvkm_therm_attr_set(struct nvkm_therm *therm,
>  void
>  nvkm_therm_clkgate_enable(struct nvkm_therm *therm)
>  {
> -	if (!therm->func->clkgate_enable || !therm->clkgating_enabled)
> +	if (!therm || !therm->func->clkgate_enable || !therm-
> >clkgating_enabled)
>  		return;
>  
>  	nvkm_debug(&therm->subdev,
> @@ -312,7 +312,7 @@ nvkm_therm_clkgate_enable(struct nvkm_therm *therm)
>  void
>  nvkm_therm_clkgate_fini(struct nvkm_therm *therm, bool suspend)
>  {
> -	if (!therm->func->clkgate_fini || !therm->clkgating_enabled)
> +	if (!therm || !therm->func->clkgate_fini || !therm-
> >clkgating_enabled)
>  		return;
>  
>  	nvkm_debug(&therm->subdev,
> @@ -395,7 +395,7 @@ void
>  nvkm_therm_clkgate_init(struct nvkm_therm *therm,
>  			const struct nvkm_therm_clkgate_pack *p)
>  {
> -	if (!therm->func->clkgate_init || !therm->clkgating_enabled)
> +	if (!therm || !therm->func->clkgate_init || !therm-
> >clkgating_enabled)
>  		return;
>  
>  	therm->func->clkgate_init(therm, p);
-- 
Cheers,
	Lyude Paul