regmap: cache: Make sure to sync the last register in a block

regcache_sync_block_raw_flush() expects the address of the register after last
register that needs to be synced as its parameter. But the last call to
regcache_sync_block_raw_flush() in regcache_sync_block_raw() passes the address
of the last register in the block. This effectively always skips over the last
register in a block, even if it needs to be synced. In order to fix it increase
the address by one register.

The issue was introduced in commit 75a5f89 ("regmap: cache: Write consecutive
registers in a single block write").

Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index e69102696533e7224b74a1237f64c478eeb2ab18..3455f833e473c8a053898c4e96e540612dd1d10e 100644 (file)
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -719,7 +719,8 @@ static int regcache_sync_block_raw(struct regmap *map, void *block,
                }
        }
 
-       return regcache_sync_block_raw_flush(map, &data, base, regtmp);
+       return regcache_sync_block_raw_flush(map, &data, base, regtmp +
+                       map->reg_stride);
 }
 
 int regcache_sync_block(struct regmap *map, void *block,