Commit a1cfe7cc authored by Alexandre Belloni's avatar Alexandre Belloni
Browse files

rtc: pcf8523: report oscillator failures 



Report oscillator failures and invalid date/time on RTC_VL_READ.

Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20210418002023.1000265-3-alexandre.belloni@bootlin.com
parent 13e37b7f

drivers/rtc/rtc-pcf8523.c

+11 −2
Original line number Diff line number Diff line
@@ -406,6 +406,8 @@ static int pcf8523_rtc_ioctl(struct device *dev, unsigned int cmd, 
			     unsigned long arg)

{

	struct i2c_client *client = to_i2c_client(dev);

	unsigned int flags = 0;

	u8 value;

	int ret;



	switch (cmd) {
@@ -414,9 +416,16 @@ static int pcf8523_rtc_ioctl(struct device *dev, unsigned int cmd, 
		if (ret < 0)

			return ret;

		if (ret)

			ret = RTC_VL_BACKUP_LOW;

			flags |= RTC_VL_BACKUP_LOW;



		ret = pcf8523_read(client, REG_SECONDS, &value);

		if (ret < 0)

			return ret;



		if (value & REG_SECONDS_OS)

			flags |= RTC_VL_DATA_INVALID;



		return put_user(ret, (unsigned int __user *)arg);

		return put_user(flags, (unsigned int __user *)arg);



	default:

		return -ENOIOCTLCMD;