regmap: Add the regcache_sync trace event

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 142d9cdfef3a..00609bf785fb 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -221,12 +221,18 @@ EXPORT_SYMBOL_GPL(regcache_write);
  */
 int regcache_sync(struct regmap *map)
 {
+        int ret;
+        const char *name;
+
         BUG_ON(!map->cache_ops);
 
         if (map->cache_ops->sync) {
                 dev_dbg(map->dev, "Syncing %s cache\n",
                         map->cache_ops->name);
-                return map->cache_ops->sync(map);
+                name = map->cache_ops->name;
+                trace_regcache_sync(map->dev, name, "start");
+                ret = map->cache_ops->sync(map);
+                trace_regcache_sync(map->dev, name, "stop");
         }
         return 0;
 }