From: Uwe Kleine-König Date: Fri, 18 Dec 2020 10:10:54 +0000 (+0100) Subject: rtc: pcf2127: only use watchdog when explicitly available X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=71ac13457d9d1007effde65b54818106b2c2b525;p=kernel.git rtc: pcf2127: only use watchdog when explicitly available Most boards using the pcf2127 chip (in my bubble) don't make use of the watchdog functionality and the respective output is not connected. The effect on such a board is that there is a watchdog device provided that doesn't work. So only register the watchdog if the device tree has a "reset-source" property. Signed-off-by: Uwe Kleine-König [RV: s/has-watchdog/reset-source/] Signed-off-by: Rasmus Villemoes Signed-off-by: Alexandre Belloni Link: https://lore.kernel.org/r/20201218101054.25416-3-rasmus.villemoes@prevas.dk --- diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c index 33fa8b17b79c4..39a7b5116aa4b 100644 --- a/drivers/rtc/rtc-pcf2127.c +++ b/drivers/rtc/rtc-pcf2127.c @@ -336,7 +336,8 @@ static int pcf2127_watchdog_init(struct device *dev, struct pcf2127 *pcf2127) u32 wdd_timeout; int ret; - if (!IS_ENABLED(CONFIG_WATCHDOG)) + if (!IS_ENABLED(CONFIG_WATCHDOG) || + !device_property_read_bool(dev, "reset-source")) return 0; pcf2127->wdd.parent = dev;