1 files changed, 8 insertions, 4 deletions

diff --git a/drivers/mfd/da9052-i2c.c b/drivers/mfd/da9052-i2c.c
index 6a9fec40d018..c319c4ef5d49 100644
--- a/drivers/mfd/da9052-i2c.c
+++ b/drivers/mfd/da9052-i2c.c
@@ -86,7 +86,11 @@ static int da9052_i2c_fix(struct da9052 *da9052, unsigned char reg)
         return 0;
 }
 
-static int da9052_i2c_enable_multiwrite(struct da9052 *da9052)
+/*
+ * According to errata item 24, multiwrite mode should be avoided
+ * in order to prevent register data corruption after power-down.
+ */
+static int da9052_i2c_disable_multiwrite(struct da9052 *da9052)
 {
         int reg_val, ret;
 
@@ -94,8 +98,8 @@ static int da9052_i2c_enable_multiwrite(struct da9052 *da9052)
         if (ret < 0)
                 return ret;
 
-        if (reg_val & DA9052_CONTROL_B_WRITEMODE) {
-                reg_val &= ~DA9052_CONTROL_B_WRITEMODE;
+        if (!(reg_val & DA9052_CONTROL_B_WRITEMODE)) {
+                reg_val |= DA9052_CONTROL_B_WRITEMODE;
                 ret = regmap_write(da9052->regmap, DA9052_CONTROL_B_REG,
                                    reg_val);
                 if (ret < 0)
@@ -154,7 +158,7 @@ static int da9052_i2c_probe(struct i2c_client *client,
                 return ret;
         }
 
-        ret = da9052_i2c_enable_multiwrite(da9052);
+        ret = da9052_i2c_disable_multiwrite(da9052);
         if (ret < 0)
                 return ret;