regmap: core: Cache all registers by default when cache is enabled

Currently all register maps with a cache need to provide a volatile
callback since the default is to assume all registers are volatile.
This is not sensible if we have a cache so change the default to be
fully cached if a cache is provided.

Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index a941dcfe7590..2f1f3ff6c6bf 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -123,7 +123,10 @@ bool regmap_volatile(struct regmap *map, unsigned int reg)
         if (map->volatile_table)
                 return _regmap_check_range_table(map, reg, map->volatile_table);
 
-        return true;
+        if (map->cache_ops)
+                return false;
+        else
+                return true;
 }
 
 bool regmap_precious(struct regmap *map, unsigned int reg)