netdev - RE: [PATCH net-next v2] ethernet/intel: fix PTP_1588

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Date:   Mon, 2 Aug 2021 21:10:49 +0000
From:   "Keller, Jacob E" <jacob.e.keller@...el.com>
To:     Arnd Bergmann <arnd@...nel.org>
CC:     Richard Cochran <richardcochran@...il.com>,
        Nicolas Pitre <nicolas.pitre@...aro.org>,
        "Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
        "Nguyen, Anthony L" <anthony.l.nguyen@...el.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        "Saleem, Shiraz" <shiraz.saleem@...el.com>,
        "Ertman, David M" <david.m.ertman@...el.com>,
        "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH net-next v2] ethernet/intel: fix PTP_1588_CLOCK
 dependencies



> -----Original Message-----
> From: Arnd Bergmann <arnd@...nel.org>
> Sent: Monday, August 02, 2021 1:59 PM
> To: Keller, Jacob E <jacob.e.keller@...el.com>
> Cc: Richard Cochran <richardcochran@...il.com>; Nicolas Pitre
> <nicolas.pitre@...aro.org>; Brandeburg, Jesse <jesse.brandeburg@...el.com>;
> Nguyen, Anthony L <anthony.l.nguyen@...el.com>; David S. Miller
> <davem@...emloft.net>; Jakub Kicinski <kuba@...nel.org>; Arnd Bergmann
> <arnd@...db.de>; Kurt Kanzenbach <kurt@...utronix.de>; Saleem, Shiraz
> <shiraz.saleem@...el.com>; Ertman, David M <david.m.ertman@...el.com>;
> intel-wired-lan@...ts.osuosl.org; netdev@...r.kernel.org; linux-
> kernel@...r.kernel.org
> Subject: Re: [PATCH net-next v2] ethernet/intel: fix PTP_1588_CLOCK
> dependencies
> 
> On Mon, Aug 2, 2021 at 10:46 PM Keller, Jacob E
> <jacob.e.keller@...el.com> wrote:
> 
> > > You can do something like it for a particular symbol though, such as
> > >
> > > config MAY_USE_PTP_1588_CLOCK
> > >        def_tristate PTP_1588_CLOCK || !PTP_1588_CLOCK
> > >
> > >  config E1000E
> > >         tristate "Intel(R) PRO/1000 PCI-Express Gigabit Ethernet support"
> > >         depends on PCI && (!SPARC32 || BROKEN)
> > > +       depends on MAY_USE_PTP_1588_CLOCK
> > >         select CRC32
> > > -       imply PTP_1588_CLOCK
> >
> > What about "integrates"?
> 
> Maybe, we'd need to look at whether that fits for the other users of the
> "A || !A" trick.
> 

Sure.  I just know from reading it other places it really causes a "huh?" reaction.