[PATCH] rtc: pcf2127: bugfix: watchdog build dependency

From: Bruno Thomsen
Date: Tue Aug 27 2019 - 10:37:12 EST

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

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@xxxxxxxxxx>
Reported-by: YueHaibing <yuehaibing@xxxxxxxxxx>
Fixes: bbc597561ce1 ("rtc: pcf2127: add watchdog feature support")
Signed-off-by: Bruno Thomsen <bruno.thomsen@xxxxxxxxx>
drivers/rtc/Kconfig | 1 +
drivers/rtc/rtc-pcf2127.c | 2 ++
2 files changed, 3 insertions(+)

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index a3bb58a08879..ab0ccf4a3247 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -874,6 +874,7 @@ config RTC_DRV_DS3232_HWMON
config RTC_DRV_PCF2127
tristate "NXP PCF2127"
depends on RTC_I2C_AND_SPI
If you say yes here you get support for the NXP PCF2127/29 RTC
chips with integrated quartz crystal for industrial applications.
diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c
index 3ec87d320766..02b069caffd5 100644
--- a/drivers/rtc/rtc-pcf2127.c
+++ b/drivers/rtc/rtc-pcf2127.c
@@ -475,9 +475,11 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap,
return ret;

ret = devm_watchdog_register_device(dev, &pcf2127->wdd);
if (ret)
return ret;
+#endif /* CONFIG_WATCHDOG */

* Disable battery low/switch-over timestamp and interrupts.