regmap: Remove default cache sync implementation

It's not used as all cache types have sync operations so it's just dead
code which never gets tested.

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

1 files changed, 2 insertions, 19 deletions

diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index ee36bed9479..4d43ed36348 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -254,12 +254,11 @@ EXPORT_SYMBOL_GPL(regcache_write);
 int regcache_sync(struct regmap *map)
 {
         int ret = 0;
-        unsigned int val;
         unsigned int i;
         const char *name;
         unsigned int bypass;
 
-        BUG_ON(!map->cache_ops);
+        BUG_ON(!map->cache_ops || !map->cache_ops->sync);
 
         mutex_lock(&map->lock);
         /* Remember the initial bypass state */
@@ -284,24 +283,8 @@ int regcache_sync(struct regmap *map)
         }
         map->cache_bypass = 0;
 
-        if (map->cache_ops->sync) {
-                ret = map->cache_ops->sync(map);
-        } else {
-                for (i = 0; i < map->num_reg_defaults; i++) {
-                        ret = regcache_read(map, i, &val);
-                        if (ret < 0)
-                                goto out;
-                        map->cache_bypass = 1;
-                        ret = _regmap_write(map, i, val);
-                        map->cache_bypass = 0;
-                        if (ret < 0)
-                                goto out;
-                        dev_dbg(map->dev, "Synced register %#x, value %#x\n",
-                                map->reg_defaults[i].reg,
-                                map->reg_defaults[i].def);
-                }
+        ret = map->cache_ops->sync(map);
 
-        }
 out:
         trace_regcache_sync(map->dev, name, "stop");
         /* Restore the bypass state */