[PATCH] drm/amd: Return NULL instead of false in dcn201_acquire_idle_pipe_for_layer()

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Clang warns:

drivers/gpu/drm/amd/amdgpu/../display/dc/dcn201/dcn201_resource.c:1017:10: error: expression which evaluates to zero treated as a null pointer constant of type 'struct pipe_ctx *' [-Werror,-Wnon-literal-null-conversion]
                return false;
                       ^~~~~
1 error generated.

Use NULL instead of false since the function is returning a pointer
rather than a boolean.

Fixes: ff7e396f822f ("drm/amd/display: add cyan_skillfish display support")
Link: https://github.com/ClangBuiltLinux/linux/issues/1470
Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>
---
 drivers/gpu/drm/amd/display/dc/dcn201/dcn201_resource.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn201/dcn201_resource.c b/drivers/gpu/drm/amd/display/dc/dcn201/dcn201_resource.c
index aec276e1db65..8523a048e6f6 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn201/dcn201_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn201/dcn201_resource.c
@@ -1014,7 +1014,7 @@ static struct pipe_ctx *dcn201_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;

base-commit: b47b99e30cca8906753c83205e8c6179045dd725
-- 
2.33.0.591.gddb1055343




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