[PATCH 10/12] drm/amd/display: avoid apply_clk_constraints for address update

[Kai Wasserbäch]

[Please CC me on all replies, I'm not subscribed to the list.]

Harry Wentland wrote on 08.12.2016 02:26:
> From: Tony Cheng <tony.cheng at amd.com>
> 
> - dc_update_surfaces_for_target get called in ISR but apply_clk_constraints allocates memory
> 
> Change-Id: I9f4b7b6ca4af27c35c007e3af95111081a77d242
> Signed-off-by: Tony Cheng <tony.cheng at amd.com>
> Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin at amd.com>
> Acked-by: Harry Wentland <Harry.Wentland at amd.com>
> ---
>  drivers/gpu/drm/amd/display/dc/core/dc.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
> index 70b7673993b2..522ef7047564 100644
> --- a/drivers/gpu/drm/amd/display/dc/core/dc.c
> +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
> @@ -1336,6 +1336,7 @@ void dc_update_surfaces_for_target(struct dc *dc, struct dc_surface_update *upda
>  	int i, j;
>  	bool is_new_pipe_surface[MAX_PIPES];
>  	const struct dc_surface *new_surfaces[MAX_SURFACES] = { 0 };
> +	bool need_apply_clk_constraints = false;
>  
>  	update_surface_trace(dc, updates, surface_count);
>  
> @@ -1405,6 +1406,7 @@ void dc_update_surfaces_for_target(struct dc *dc, struct dc_surface_update *upda
>  
>  			if (updates[i].plane_info || updates[i].scaling_info
>  					|| is_new_pipe_surface[j]) {
> +				need_apply_clk_constraints = true;

Where is this variable used? I grepped through the tree at
<https://cgit.freedesktop.org/~agd5f/linux/tree/drivers/gpu/drm/amd?h=amd-staging-4.7>,
but couldn't find it anywhere and it doesn't get passed anywhere from here. Or
are there patches missing in Alex' tree?

Cheers,
Kai

>  				if (updates[i].plane_info) {
>  					surface->public.color_space =
>