linux-kernel - Re: [PATCH 2/8] mfd: db8500-prcmu: fix stub helper interface

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Message-ID: <CAK8P3a3iu-2MAdD+-nRQfeOme--LLSAH1LRkREVGRo78m_ra7Q@mail.gmail.com>
Date:   Tue, 28 Feb 2017 22:47:02 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     Wim Van Sebroeck <wim@...ana.be>, linux-watchdog@...r.kernel.org,
        Lee Jones <lee.jones@...aro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/8] mfd: db8500-prcmu: fix stub helper interface

On Tue, Feb 28, 2017 at 10:42 PM, Guenter Roeck <linux@...ck-us.net> wrote:
> On Tue, Feb 28, 2017 at 10:01:17PM +0100, Arnd Bergmann wrote:
>> When the db8500 watchdog is enabled without the PRCMU, we get a lot of
>> warnings about duplicate or missing helper functions:
>>
>> In file included from drivers/watchdog/ux500_wdt.c:21:0:
>> include/linux/mfd/dbx500-prcmu.h:422:19: error: redefinition of 'prcmu_abb_read'
>>  static inline int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size)
>>
>> This removes the duplicate function definitions and moves the helpers in
>> dbx500-prcmu outside of the #ifdef that hides them.
>>
>
> Is that appropriate ? Maybe we should just disable COMPILE_TEST
> for this driver instead.

Or we could do both. The MFD driver was written to support this in principle,
it just hasn't worked in a long time.

     Arnd