diff options
Diffstat (limited to 'drivers/rtc/rtc-m41t80.c')
| -rw-r--r-- | drivers/rtc/rtc-m41t80.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c index f44dcf628c87..96a606d5f6e6 100644 --- a/drivers/rtc/rtc-m41t80.c +++ b/drivers/rtc/rtc-m41t80.c @@ -155,6 +155,7 @@ struct m41t80_data { #ifdef CONFIG_COMMON_CLK struct clk_hw sqw; unsigned long freq; + unsigned int sqwe; #endif }; @@ -527,7 +528,10 @@ static int m41t80_sqw_control(struct clk_hw *hw, bool enable) else ret &= ~M41T80_ALMON_SQWE; - return i2c_smbus_write_byte_data(client, M41T80_REG_ALARM_MON, ret); + ret = i2c_smbus_write_byte_data(client, M41T80_REG_ALARM_MON, ret); + if (!ret) + m41t80->sqwe = enable; + return ret; } static int m41t80_sqw_prepare(struct clk_hw *hw) @@ -542,14 +546,7 @@ static void m41t80_sqw_unprepare(struct clk_hw *hw) static int m41t80_sqw_is_prepared(struct clk_hw *hw) { - struct m41t80_data *m41t80 = sqw_to_m41t80_data(hw); - struct i2c_client *client = m41t80->client; - int ret = i2c_smbus_read_byte_data(client, M41T80_REG_ALARM_MON); - - if (ret < 0) - return ret; - - return !!(ret & M41T80_ALMON_SQWE); + return sqw_to_m41t80_data(hw)->sqwe; } static const struct clk_ops m41t80_sqw_ops = { |