regmap: Back out work buffer fix

This reverts commit bc8ce4 (regmap: don't corrupt work buffer in
_regmap_raw_write()) since it turns out that it can cause issues when
taken in isolation from the other changes in -next that lead to its
discovery.  On the basis that nobody noticed the problems for quite some
time without that subsequent work let's drop it from v3.9.

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

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index d34adef1e63e..58cfb3232428 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -943,7 +943,8 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
                 unsigned int ival;
                 int val_bytes = map->format.val_bytes;
                 for (i = 0; i < val_len / val_bytes; i++) {
-                        ival = map->format.parse_val(val + (i * val_bytes));
+                        memcpy(map->work_buf, val + (i * val_bytes), val_bytes);
+                        ival = map->format.parse_val(map->work_buf);
                         ret = regcache_write(map, reg + (i * map->reg_stride),
                                              ival);
                         if (ret) {