@@ -43,37 +43,38 @@ static struct i2c_driver pcf85063_driver;
static int pcf85063_stop_clock(struct i2c_client *client, u8 *ctrl1)
{
- s32 ret;
+ int rc;
+ u8 reg;
- ret = i2c_smbus_read_byte_data(client, PCF85063_REG_CTRL1);
- if (ret < 0) {
+ rc = i2c_smbus_read_byte_data(client, PCF85063_REG_CTRL1);
+ if (rc < 0) {
dev_err(&client->dev, "Failing to stop the clock\n");
return -EIO;
}
/* stop the clock */
- ret |= PCF85063_REG_CTRL1_STOP;
+ reg = rc | PCF85063_REG_CTRL1_STOP;
- ret = i2c_smbus_write_byte_data(client, PCF85063_REG_CTRL1, ret);
- if (ret < 0) {
+ rc = i2c_smbus_write_byte_data(client, PCF85063_REG_CTRL1, reg);
+ if (rc < 0) {
dev_err(&client->dev, "Failing to stop the clock\n");
return -EIO;
}
- *ctrl1 = ret;
+ *ctrl1 = reg;
return 0;
}
static int pcf85063_start_clock(struct i2c_client *client, u8 ctrl1)
{
- s32 ret;
+ int rc;
/* start the clock */
ctrl1 &= ~PCF85063_REG_CTRL1_STOP;
- ret = i2c_smbus_write_byte_data(client, PCF85063_REG_CTRL1, ctrl1);
- if (ret < 0) {
+ rc = i2c_smbus_write_byte_data(client, PCF85063_REG_CTRL1, ctrl1);
+ if (rc < 0) {
dev_err(&client->dev, "Failing to start the clock\n");
return -EIO;
}
Fix a bug that caused the Control_1 register to get zeroed whenever the RTC time is set. The problem occurred between stopping and starting the RTC clock, wherein the return value of a successful I2C write function would get written to the register. Also update variables of the start and stop functions to be more consistent with the rest of the driver. Signed-off-by: Alvin Šipraga <alvin@airtame.com> --- drivers/rtc/rtc-pcf85063.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-)