diff options
Diffstat (limited to 'drivers/rtc/rtc-max6900.c')
| -rw-r--r-- | drivers/rtc/rtc-max6900.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/rtc/rtc-max6900.c b/drivers/rtc/rtc-max6900.c index 4804985..55969b1 100644 --- a/drivers/rtc/rtc-max6900.c +++ b/drivers/rtc/rtc-max6900.c @@ -164,7 +164,14 @@ static int max6900_i2c_read_time(struct i2c_client *client, struct rtc_time *tm) static int max6900_i2c_clear_write_protect(struct i2c_client *client) { - return i2c_smbus_write_byte_data(client, MAX6900_REG_CONTROL_WRITE, 0); + int rc; + rc = i2c_smbus_write_byte_data(client, MAX6900_REG_CONTROL_WRITE, 0); + if (rc < 0) { + dev_err(&client->dev, "%s: control register write failed\n", + __func__); + return -EIO; + } + return 0; } static int |