5.4-stable review patch. If anyone has any objections, please let me know.
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From: Maxime Chevallier maxime.chevallier@bootlin.com
[ Upstream commit e0779a0dcf41a6452ac0a169cd96863feb5787c7 ]
The undervoltage flags reported by the RTC are useful to know if the time and date are reliable after a reboot. Although the threshold VLOW1 indicates that the thermometer has been shutdown and time compensation is off, it doesn't mean that the temperature readout is currently impossible.
As the system is running, the RTC voltage is now fully established and we can read the temperature.
Fixes: 67075b63cce2 ("rtc: add AB-RTCMC-32.768kHz-EOZ9 RTC support") Signed-off-by: Maxime Chevallier maxime.chevallier@bootlin.com Link: https://lore.kernel.org/r/20241122101031.68916-3-maxime.chevallier@bootlin.c... Signed-off-by: Alexandre Belloni alexandre.belloni@bootlin.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/rtc/rtc-ab-eoz9.c | 7 ------- 1 file changed, 7 deletions(-)
diff --git a/drivers/rtc/rtc-ab-eoz9.c b/drivers/rtc/rtc-ab-eoz9.c index d690985caa4cf..1d6a626fdf933 100644 --- a/drivers/rtc/rtc-ab-eoz9.c +++ b/drivers/rtc/rtc-ab-eoz9.c @@ -281,13 +281,6 @@ static int abeoz9z3_temp_read(struct device *dev, if (ret < 0) return ret;
- if ((val & ABEOZ9_REG_CTRL_STATUS_V1F) || - (val & ABEOZ9_REG_CTRL_STATUS_V2F)) { - dev_err(dev, - "thermometer might be disabled due to low voltage\n"); - return -EINVAL; - } - switch (attr) { case hwmon_temp_input: ret = regmap_read(regmap, ABEOZ9_REG_REG_TEMP, &val);