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From: Stephen Rothwell <sfr@canb.auug.org.au>
To: Guenter Roeck <linux@roeck-us.net>
Cc: David Miller <davem@davemloft.net>,
	Networking <netdev@vger.kernel.org>,
	Linux-Next Mailing List <linux-next@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Masahiro Yamada <yamada.masahiro@socionext.com>,
	Andrew Lunn <andrew@lunn.ch>
Subject: Re: linux-next: build warning after merge of the net-next tree
Date: Fri, 20 Jul 2018 08:09:06 +1000
Message-ID: <20180720080906.7a30c573@canb.auug.org.au> (raw)
In-Reply-To: <6dabf12b-e3db-dfe8-101c-02772039e21a@roeck-us.net>

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Hi Guenter,

On Thu, 19 Jul 2018 06:49:01 -0700 Guenter Roeck <linux@roeck-us.net> wrote:
>
> On 07/18/2018 10:29 PM, Stephen Rothwell wrote:
> > 
> > On Wed, 18 Jul 2018 20:52:56 -0700 Guenter Roeck <linux@roeck-us.net> wrote:  
> >>
> >> On 07/18/2018 07:04 PM, Stephen Rothwell wrote:  
> >>>
> >>> After merging the net-next tree, today's linux-next build (x86_64
> >>> allmodconfig) produced this warning:
> >>>
> >>> *
> >>> * Restart config...
> >>> *
> >>> ....
> >>>
> >>> This is output by my "make allmodconfig" and only started after merging
> >>> the net-next tree today.  It has continued for further merges/builds.
> >>>
> >>> I suspect commit
> >>>
> >>>     1323061a018a ("net: phy: sfp: Add HWMON support for module sensors")
> >>>
> >>> which added an "imply" clause.
> >>>      
> >> I thought "imply" was better than "depends on HWMON || HWMON=n", but maybe
> >> not. Is that a caveat when using "imply", and does it mean that "imply"
> >> should better not be used ?  
> > 
> > I don't know, sorry.  It was just my best guess from what I could see
> > had changed.
> > 
> > I wonder if it makes a difference that I am doing my "make
> > allmodconfig" on top of a previous "make allmodconfig" and some symbols
> > are marked as "NEW" (though they are not symbols related to the changes
> > that happened during the net-next tree merge)?
> >   
> 
> I tried to reproduce the problem, but I don't see the message.
> 
> What I do see, though, is that "make allmodconfig" on a clean tree,
> followed by "make menuconfig", results in configuration changes.
> Specifically,
> 
>  > CONFIG_ARC_EMAC_CORE=m
>  > CONFIG_ARC_EMAC=m
>  > CONFIG_EMAC_ROCKCHIP=m  
> 
> is removed by menuconfig, and a large number of "# ... is not set"
> configuration lines are added. Weird and bad, since several of the
> disabled configurations _should_ be enabled by "make allmodconfig",
> and a large number of hwmon drivers are affected. Bisect does point
> to "net: phy: sfp: Add HWMON support for module sensors", meaning
> "imply hwmon" does have severe side effects and can not be used.
> 
> I'll try to find a fix.

OK, my mistake, the "make allmodconfig" works, the following "make"
causes the config restart.  (I am actually doing cross builds and using
an external object directory, in case that matters.)

I removed the "imply HWMON" line added by the above commit and the
problem went away.  Also, using "depends on HWMON || HWMON=n" instead
of the imply fixes it.
-- 
Cheers,
Stephen Rothwell

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  reply index

Thread overview: 76+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-19  2:04 Stephen Rothwell
2018-07-19  3:52 ` Guenter Roeck
2018-07-19  5:29   ` Stephen Rothwell
2018-07-19 13:49     ` Guenter Roeck
2018-07-19 22:09       ` Stephen Rothwell [this message]
2018-07-19 22:35         ` Guenter Roeck
2018-07-19 23:19           ` Masahiro Yamada
2018-07-19 23:37             ` Guenter Roeck
2018-08-14  7:05             ` Masahiro Yamada
2018-08-14 13:28               ` Guenter Roeck
2018-07-20  1:06           ` Stephen Rothwell
  -- strict thread matches above, loose matches on Subject: below --
2019-11-21  7:34 Stephen Rothwell
2019-11-11  1:39 Stephen Rothwell
2019-11-11  1:45 ` Eric Dumazet
2019-11-11  1:19 Stephen Rothwell
2019-11-11 10:24 ` Russell King - ARM Linux admin
2019-10-07 22:42 Stephen Rothwell
2019-10-09 12:24 ` David Howells
2019-07-08  3:25 Stephen Rothwell
2019-05-23 23:47 Stephen Rothwell
2019-04-23  1:32 Stephen Rothwell
2019-04-16  1:20 Stephen Rothwell
2019-04-16 10:03 ` John Hurley
2019-03-21 23:05 Stephen Rothwell
2019-03-21 23:10 ` Florian Fainelli
2019-02-22  1:06 Stephen Rothwell
2019-02-22  1:10 ` Florian Fainelli
2019-02-13  0:51 Stephen Rothwell
2019-02-13  0:58 ` Florian Fainelli
2019-02-13  0:49 Stephen Rothwell
2019-02-13  0:57 ` Florian Fainelli
2019-02-03 23:44 Stephen Rothwell
2019-02-04  4:26 ` David Miller
2019-02-04  4:32   ` Stephen Rothwell
2018-11-29  0:24 Stephen Rothwell
2018-12-19  2:42 ` Stephen Rothwell
2018-12-19  3:07   ` Gustavo A. R. Silva
2018-12-19  5:37     ` Stephen Rothwell
2018-07-19  1:40 Stephen Rothwell
2018-07-20 20:31 ` Linus Walleij
2018-07-05 23:56 Stephen Rothwell
2018-07-07 11:30 ` David Miller
2018-07-07 12:03   ` Stephen Rothwell
2018-05-29  3:10 Stephen Rothwell
2018-03-13  6:11 Stephen Rothwell
2018-03-13 11:46 ` Gustavo A. R. Silva
2018-03-13 15:33   ` David Miller
2018-03-13 20:28     ` Gustavo A. R. Silva
2018-01-18  1:20 Stephen Rothwell
2017-12-04  0:02 Stephen Rothwell
2017-12-04  6:33 ` Heiner Kallweit
2017-12-04 18:21 ` David Miller
2017-11-15  5:01 Stephen Rothwell
2016-12-09  0:34 Stephen Rothwell
2016-11-16  0:36 Stephen Rothwell
2016-11-16  0:56 ` Martin KaFai Lau
2016-07-27  6:15 Stephen Rothwell
2016-07-27  6:19 ` David Miller
2016-07-27  6:35   ` Stephen Rothwell
2016-07-27  6:45     ` Iyappan Subramanian
2016-07-11  6:13 Stephen Rothwell
2016-07-11  8:16 ` Simon Horman
2016-07-04  3:15 Stephen Rothwell
2016-07-04  5:19 ` Jason Wang
2016-02-15  2:09 Stephen Rothwell
2016-02-15  8:01 ` Nikolay Borisov
2014-05-15  6:47 Stephen Rothwell
2014-05-15 17:39 ` Cong Wang
2014-05-15 17:43   ` David Miller
2014-05-15 18:36     ` Cong Wang
2014-01-06  4:53 Stephen Rothwell
2013-08-21  9:10 Stephen Rothwell
2013-08-21 18:15 ` David Miller
2013-02-18  6:00 Stephen Rothwell
2012-04-23  6:54 Stephen Rothwell
2012-04-23  7:22 ` David Miller

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