Re: [PATCH] drm/amd/display: return 'NULL' instead of 'false' from dcn20_acquire_idle_pipe_for_layer

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On Fri, Jul 12, 2019 at 5:40 AM Arnd Bergmann <arnd@xxxxxxxx> wrote:
>
> clang complains that 'false' is a not a pointer:
>
> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn20/dcn20_resource.c:2428:10: error: expression which evaluates to zero treated as a null pointer constant of type 'struct pipe_ctx *' [-Werror,-Wnon-literal-null-conversion]
>                 return false;
>
> Changing it to 'NULL' looks like the right thing that will shut up
> the warning and make it easier to read, while not changing behavior.
>
> Fixes: 7ed4e6352c16 ("drm/amd/display: Add DCN2 HW Sequencer and Resource")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

Applied.  Thanks!

Alex

> ---
>  drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
> index 70ac8a95d2db..66aa414ad38f 100644
> --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
> +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
> @@ -2425,7 +2425,7 @@ struct pipe_ctx *dcn20_acquire_idle_pipe_for_layer(
>                 ASSERT(0);
>
>         if (!idle_pipe)
> -               return false;
> +               return NULL;
>
>         idle_pipe->stream = head_pipe->stream;
>         idle_pipe->stream_res.tg = head_pipe->stream_res.tg;
> --
> 2.20.0
>
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