From: Bruno Thomsen <bruno.thomsen@gmail.com>
To: Guenter Roeck <linux@roeck-us.net>
Cc: Yuehaibing <yuehaibing@huawei.com>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
a.zummo@towertech.it, linux-rtc@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH -next] rtc: pcf2127: Fix build error without CONFIG_WATCHDOG_CORE
Date: Mon, 26 Aug 2019 20:13:35 +0200 [thread overview]
Message-ID: <CAH+2xPDw3ZWcH_g=Ui6u4Bzw2ii3EBnwGT0QuBseu1z+FgS9LA@mail.gmail.com> (raw)
In-Reply-To: <01a2b6b2-eb15-1b40-1edc-de122bbdb5a2@roeck-us.net>
Den man. 26. aug. 2019 kl. 15.20 skrev Guenter Roeck <linux@roeck-us.net>:
>
> On 8/26/19 1:12 AM, Yuehaibing wrote:
> >
> >
> > On 2019/8/23 22:05, Alexandre Belloni wrote:
> >> On 23/08/2019 20:45:53+0800, YueHaibing wrote:
> >>> If WATCHDOG_CORE is not set, build fails:
> >>>
> >>> drivers/rtc/rtc-pcf2127.o: In function `pcf2127_probe.isra.6':
> >>> drivers/rtc/rtc-pcf2127.c:478: undefined reference to `devm_watchdog_register_device'
> >>>
> >>> Add WATCHDOG_CORE Kconfig dependency to fix this.
> >>>
> >>> Reported-by: Hulk Robot <hulkci@huawei.com>
> >>> Fixes: bbc597561ce1 ("rtc: pcf2127: add watchdog feature support")
> >>> Signed-off-by: YueHaibing <yuehaibing@huawei.com>
> >>> ---
> >>> drivers/rtc/Kconfig | 2 ++
> >>> 1 file changed, 2 insertions(+)
> >>>
> >>> diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
> >>> index 25af63d..9dce7dc 100644
> >>> --- a/drivers/rtc/Kconfig
> >>> +++ b/drivers/rtc/Kconfig
> >>> @@ -886,6 +886,8 @@ config RTC_DRV_DS3232_HWMON
> >>> config RTC_DRV_PCF2127
> >>> tristate "NXP PCF2127"
> >>> depends on RTC_I2C_AND_SPI
> >>> + depends on WATCHDOG
> >>
> >> Definitively not, I fixed it that way:
> >> + select WATCHDOG_CORE if WATCHDOG
> >
> >
> > No, this still fails while WATCHDOG is not set
> >
>
> Correct, there are no dummy functions for watchdog device registration.
> There would have to be conditional code in the driver if the watchdog
> is supposed to be optional.
Hi
During review of version 1, there was a wish for the watchdog feature not
to be hidden behind Kconfig option, e.g. RTC_DRV_PCF2127_WDT, as
it would not result in a much bigger driver.
I did not add any other selects/depends on in Kconfig as
RTC_DRV_DS1374_WDT and RTC_DRV_M41T80_WDT options
does not select WATCHDOG_CORE and/or WATCHDOG either.
DS1374 and M41T80 does not seem to check on any other
WATCHDOG defines other then their _WDT Kconfig.
I can create a patch that hides the watchdog code if WATCHDOG
define is not set, if that's the right way?
Bruno
next prev parent reply other threads:[~2019-08-26 18:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-23 12:45 [PATCH -next] rtc: pcf2127: Fix build error without CONFIG_WATCHDOG_CORE YueHaibing
2019-08-23 13:38 ` Guenter Roeck
2019-08-23 14:05 ` Alexandre Belloni
2019-08-26 8:12 ` Yuehaibing
2019-08-26 13:20 ` Guenter Roeck
2019-08-26 18:13 ` Bruno Thomsen [this message]
2019-08-26 18:46 ` Guenter Roeck
2019-08-28 17:18 ` Randy Dunlap
2019-08-29 14:04 ` Bruno Thomsen
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