drm/amd/display: Do not create memory allocation if stats not enabled

Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/modules/stats/stats.c

@@ -115,6 +115,7 @@ struct mod_stats *mod_stats_create(struct dc *dc)
 			&reg_data, sizeof(unsigned int), &flag))
 		core_stats->enabled = reg_data;
 
+	if (core_stats->enabled) {
 		core_stats->entries = DAL_STATS_ENTRIES_REGKEY_DEFAULT;
 		if (dm_read_persistent_data(dc->ctx, NULL, NULL,
 				DAL_STATS_ENTRIES_REGKEY,
@@ -127,6 +128,9 @@ struct mod_stats *mod_stats_create(struct dc *dc)
 
 		core_stats->time = kzalloc(sizeof(struct stats_time_cache) * core_stats->entries,
 						GFP_KERNEL);
+	} else {
+		core_stats->entries = 0;
+	}
 
 	if (core_stats->time == NULL)
 		goto fail_construct;