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From: "Rafael J. Wysocki" <rafael@kernel.org>
Date: Mon, 21 Nov 2016 14:04:34 +0100
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Subject: Re: undefined reference to `devm_watchdog_register_device'
To: Vegard Nossum <vegard.nossum@gmail.com>,
        Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Mon, Nov 21, 2016 at 10:07 AM, Vegard Nossum <vegard.nossum@gmail.com> wrote:
> Hi,
>
> I updated my config and set CONFIG_WDAT_WDT=y, got this:
>
> drivers/built-in.o: In function `wdat_wdt_probe':
> /home/vegard/linux/drivers/watchdog/wdat_wdt.c:444: undefined
> reference to `devm_watchdog_register_device'
> Makefile:962: recipe for target 'vmlinux' failed
> make: *** [vmlinux] Error 1
>
> Looks like it's missing a select for WATCHDOG_CORE in the Kconfig?

Mika?