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>

diff --git a/drivers/gpu/drm/amd/display/modules/stats/stats.c b/drivers/gpu/drm/amd/display/modules/stats/stats.c
index ed5f680..48e0219 100644 (file)
--- a/drivers/gpu/drm/amd/display/modules/stats/stats.c
+++ b/drivers/gpu/drm/amd/display/modules/stats/stats.c
@@ -115,18 +115,22 @@ struct mod_stats *mod_stats_create(struct dc *dc)
                        &reg_data, sizeof(unsigned int), &flag))
                core_stats->enabled = reg_data;
 
-       core_stats->entries = DAL_STATS_ENTRIES_REGKEY_DEFAULT;
-       if (dm_read_persistent_data(dc->ctx, NULL, NULL,
-                       DAL_STATS_ENTRIES_REGKEY,
-                       &reg_data, sizeof(unsigned int), &flag)) {
-               if (reg_data > DAL_STATS_ENTRIES_REGKEY_MAX)
-                       core_stats->entries = DAL_STATS_ENTRIES_REGKEY_MAX;
-               else
-                       core_stats->entries = 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,
+                               &reg_data, sizeof(unsigned int), &flag)) {
+                       if (reg_data > DAL_STATS_ENTRIES_REGKEY_MAX)
+                               core_stats->entries = DAL_STATS_ENTRIES_REGKEY_MAX;
+                       else
+                               core_stats->entries = reg_data;
+               }
 
-       core_stats->time = kzalloc(sizeof(struct stats_time_cache) * core_stats->entries,
-                                       GFP_KERNEL);
+               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;