linux-kernel - Re: [PATCH] watchdog: iTCO: fix link error

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Message-ID: <20200429125200.GO487496@lahna.fi.intel.com>
Date:   Wed, 29 Apr 2020 15:52:00 +0300
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Guenter Roeck <linux@...ck-us.net>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Lee Jones <lee.jones@...aro.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] watchdog: iTCO: fix link error

On Tue, Apr 28, 2020 at 11:29:11PM +0200, Arnd Bergmann wrote:
> When the MFD driver is a loadable module, the watchdog driver fails
> to get linked into the kernel:
> 
> drivers/watchdog/iTCO_wdt.o: In function `update_no_reboot_bit_pmc':
> iTCO_wdt.c:(.text+0x54f): undefined reference to `intel_pmc_gcr_update'
> 
> The code is written to support operation without the MFD driver, so
> add a Kconfig dependency that allows this, while disallowing the watchdog
> to be built-in when the MFD driver is a module.
> 
> Fixes: 25f1ca31e230 ("platform/x86: intel_pmc_ipc: Convert to MFD")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Reviewed-by: Mika Westerberg <mika.westerberg@...ux.intel.com>