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

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Date:   Tue, 28 Feb 2017 15:19:30 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Arnd Bergmann <arnd@...db.de>
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 10:47:02PM +0100, Arnd Bergmann wrote:
> 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.
> 
Both sounds better to me at this point.

Guenter