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rtc: pcf2127: bugfix: watchdog build dependency 

Disable watchdog registation when kernel is build without
watchdog functionality, and enable watchdog core otherwise.
This removes compile errors like the one below:

drivers/rtc/rtc-pcf2127.o: in function `pcf2127_probe.constprop.3':
rtc-pcf2127.c:(.text.unlikely+0x2c8): undefined reference to
`devm_watchdog_register_device'

Watchdog feature in chip will always be configured as
this is safe to do in both cases and minimize code churn.

Reported-by: Hulk Robot <hulkci@huawei.com>
Reported-by: YueHaibing <yuehaibing@huawei.com>
Fixes: bbc597561ce1 ("rtc: pcf2127: add watchdog feature support")
Signed-off-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Link: https://lore.kernel.org/r/20190827143656.4734-1-bruno.thomsen@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
alistair/sunxi64-5.4-dsi
Bruno Thomsen 2019-08-27 16:36:56 +02:00 committed by Alexandre Belloni
parent 03623b4b04
commit 28abbba36a
2 changed files with 3 additions and 0 deletions
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1
drivers/rtc/Kconfig
View File

@ -886,6 +886,7 @@ config RTC_DRV_DS3232_HWMON
config RTC_DRV_PCF2127
tristate "NXP PCF2127"
depends on RTC_I2C_AND_SPI
select WATCHDOG_CORE if WATCHDOG
help
If you say yes here you get support for the NXP PCF2127/29 RTC
chips with integrated quartz crystal for industrial applications.

2
drivers/rtc/rtc-pcf2127.c
View File

@ -475,9 +475,11 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
return ret;
}
#ifdef CONFIG_WATCHDOG
ret = devm_watchdog_register_device(dev, &pcf2127->wdd);
if (ret)
return ret;
#endif /* CONFIG_WATCHDOG */
/*
* Disable battery low/switch-over timestamp and interrupts.