regmap: zero out the regmap on allocation

Some fields will be introduced in the regmap structure that should be
set to 0 by default. So, once we allocate a regmap, make sure it is
zeroed out to avoid unexpected defaults for those values.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/core/regmap.c b/drivers/core/regmap.c
index 7422536..809f584 100644 (file)
--- a/drivers/core/regmap.c
+++ b/drivers/core/regmap.c
@@ -30,8 +30,9 @@ DECLARE_GLOBAL_DATA_PTR;
 static struct regmap *regmap_alloc(int count)
 {
        struct regmap *map;
+       size_t size = sizeof(*map) + sizeof(map->ranges[0]) * count;
 
-       map = malloc(sizeof(*map) + sizeof(map->ranges[0]) * count);
+       map = calloc(1, size);
        if (!map)
                return NULL;
        map->range_count = count;