[PATCH] regmap: Add function check before called format_val

[Henry Chen]

The regmap_format will not be initialize since regmap_bus is not assgined 
on regmap_init(). It should has a function check before using 
format_val() to avoid null function called on regmap_bulk_read().

Signed-off-by: Henry Chen <henryc.chen at mediatek.com>
---
Based on v4.2rc1
---
 drivers/base/regmap/regmap.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 7111d04..c1e8c32 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -2317,7 +2317,10 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
 					  &ival);
 			if (ret != 0)
 				return ret;
-			map->format.format_val(val + (i * val_bytes), ival, 0);
+			if (map->format.format_val)
+				map->format.format_val(val + (i * val_bytes), ival, 0);
+			else
+				memcpy(val + (i * val_bytes), &ival, val_bytes);
 		}
 	}
 
-- 
1.8.1.1.dirty