1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/mfd/adp5520.c b/drivers/mfd/adp5520.c
index 401a9b6029e3..b26644772d02 100644
--- a/drivers/mfd/adp5520.c
+++ b/drivers/mfd/adp5520.c
@@ -66,7 +66,8 @@ static int __adp5520_write(struct i2c_client *client,
         return 0;
 }
 
-int __adp5520_ack_bits(struct i2c_client *client, int reg, uint8_t bit_mask)
+static int __adp5520_ack_bits(struct i2c_client *client, int reg,
+                              uint8_t bit_mask)
 {
         struct adp5520_chip *chip = i2c_get_clientdata(client);
         uint8_t reg_val;