linux-kernel - Re: [PATCH 9/9] timers: remove old timer initialization macros

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Date:   Thu, 18 May 2017 10:25:58 +0200
From:   Christoph Hellwig <hch@....de>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Christoph Hellwig <hch@....de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Mark Gross <mark.gross@...el.com>, Tejun Heo <tj@...nel.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        linux-s390 <linux-s390@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 9/9] timers: remove old timer initialization macros

On Tue, May 16, 2017 at 09:43:34PM +0200, Arnd Bergmann wrote:
> > - * Don't use the macros below, use DECLARE_TIMER and INIT_TIMER with their
> > + * Don't use the macro below, use DECLARE_TIMER and INIT_TIMER with their
> >   * improved callback signature above.
> >   */
> > -#define __TIMER_INITIALIZER(_function, _expires, _data, _flags) { \
> > +#define DEFINE_TIMER(_name, _function, _expires, _data)                \
> > +       struct timer_list _name = {                             \
> >                 .entry = { .next = TIMER_ENTRY_STATIC },        \
> >                 .function = (_function),                        \
> >                 .expires = (_expires),                          \
> >                 .data = (_data),                                \
> > -               .flags = (_flags),                              \
> >                 __TIMER_LOCKDEP_MAP_INITIALIZER(                \
> >                         __FILE__ ":" __stringify(__LINE__))     \
> >         }
> 
> Not sure what to do about it, but I notice that the '_expires'
> argument is completely
> bogus, I don't see any way it could be used in a meaningful way, and the only
> user that passes anything other than zero is arch/mips/mti-malta/malta-display.c
> and that seems to be unintentional.

DEFINE_TIMER is the old macro and instead of fixing it up I'll just
make sure the new DECLARE_TIMER gets rid of it.