linux-kernel - Re: linux-next: build failure after merge of the watchdog tree

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Date:	Thu, 25 Sep 2014 23:49:31 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
CC:	Wim Van Sebroeck <wim@...ana.be>, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org, Carlo Caione <carlo@...one.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: linux-next: build failure after merge of the watchdog tree

On 09/25/2014 11:29 PM, Stephen Rothwell wrote:
> Hi Guenter,
>
> On Thu, 25 Sep 2014 22:51:28 -0700 Guenter Roeck <linux@...ck-us.net> wrote:
>>
>> On 09/25/2014 10:40 PM, Stephen Rothwell wrote:
>>> Hi Wim,
>>>
>>> After merging the watchdog tree, today's linux-next build (arm
>>> multi_v7_defconfig) failed like this:
>>>
>>>
>>> drivers/watchdog/meson_wdt.c: In function 'meson_wdt_probe':
>>> drivers/watchdog/meson_wdt.c:178:2: error: implicit declaration of function 'register_restart_handler' [-Werror=implicit-function-declaration]
>>>     err = register_restart_handler(&meson_wdt->restart_handler);
>>>     ^
>>> drivers/watchdog/meson_wdt.c: In function 'meson_wdt_remove':
>>> drivers/watchdog/meson_wdt.c:193:2: error: implicit declaration of function 'unregister_restart_handler' [-Werror=implicit-function-declaration]
>>>     unregister_restart_handler(&meson_wdt->restart_handler);
>>>     ^
>>>
>>> Caused by commit 575f4153957b ("ARM: meson: add watchdog driver").
>>>
>>> I have reverted that commit for today.
>>>
>>
>> Those functions are defined by patches which reside in Andrew's tree.
>> Is that merged later ?
>
> Yes, Andrew's tree is merged last and part of it depends on linux-next
> itself ...
>
> We really don't want these inter tree dependencies (especially with
> Andrew's tree).
>
Me not either. Question was how to get the restart handler patch set upstream.
Pushing it indirectly through merges of an immutable branch sounds like a good
idea, especially since there are by now patches in at least three subsystems
pending which depend on it.

Guenter

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