drm/amd/display: check for ipp before calling cursor operations

Currently all cursor related functions are made to all
pipes that are attached to a particular stream.
This is not applicable to pipes that do not have cursor plane
initialised like underlay.
Hence this patch allows cursor related operations on a pipe
only if ipp in available on that particular pipe.

The check is added to set_cursor_position & set_cursor_attribute.

Signed-off-by: Shirish S <shirish.s@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

drivers/gpu/drm/amd/display/dc/core/dc_stream.c

@@ -197,7 +197,8 @@ bool dc_stream_set_cursor_attributes(
 	for (i = 0; i < MAX_PIPES; i++) {
 		struct pipe_ctx *pipe_ctx = &res_ctx->pipe_ctx[i];
 
-		if (pipe_ctx->stream != stream || (!pipe_ctx->plane_res.xfm && !pipe_ctx->plane_res.dpp))
+		if (pipe_ctx->stream != stream || (!pipe_ctx->plane_res.xfm &&
+		    !pipe_ctx->plane_res.dpp) || !pipe_ctx->plane_res.ipp)
 			continue;
 		if (pipe_ctx->top_pipe && pipe_ctx->plane_state != pipe_ctx->top_pipe->plane_state)
 			continue;
@@ -273,7 +274,8 @@ bool dc_stream_set_cursor_position(
 		if (pipe_ctx->stream != stream ||
 				(!pipe_ctx->plane_res.mi  && !pipe_ctx->plane_res.hubp) ||
 				!pipe_ctx->plane_state ||
-				(!pipe_ctx->plane_res.xfm && !pipe_ctx->plane_res.dpp))
+				(!pipe_ctx->plane_res.xfm && !pipe_ctx->plane_res.dpp) ||
+				!pipe_ctx->plane_res.ipp)
 			continue;
 
 		if (pipe_ctx->plane_state->address.type