linux-kernel - Re: pinctrl-msm build error on Linus' tree

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Date:	Wed, 8 Oct 2014 17:49:08 -0500
From:	Josh Cartwright <joshc@...eaurora.org>
To:	Josh Boyer <jwboyer@...oraproject.org>
Cc:	Pramod Gurav <pramod.gurav@...rtplayin.com>,
	Bjorn Andersson <bjorn.andersson@...ymobile.com>,
	Guenter Roeck <linux@...ck-us.net>,
	Linus Walleij <linus.walleij@...aro.org>,
	"Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>
Subject: Re: pinctrl-msm build error on Linus' tree

Hey Josh-

On Wed, Oct 08, 2014 at 06:42:55PM -0400, Josh Boyer wrote:
> We're hitting a build error on ARM with Linus' tree as of Linux
> v3.17-2860-gef0625b70dac :
> 
> drivers/pinctrl/qcom/pinctrl-msm.c: In function 'msm_pinctrl_setup_pm_reset':
> drivers/pinctrl/qcom/pinctrl-msm.c:875:4: error: implicit declaration
> of function 'register_restart_handler'
> [-Werror=implicit-function-declaration]
>     if (register_restart_handler(&pctrl->restart_nb))
>     ^
> drivers/pinctrl/qcom/pinctrl-msm.c: In function 'msm_pinctrl_remove':
> drivers/pinctrl/qcom/pinctrl-msm.c:949:2: error: implicit declaration
> of function 'unregister_restart_handler'
> [-Werror=implicit-function-declaration]
>   unregister_restart_handler(&pctrl->restart_nb);
>   ^
> cc1: some warnings being treated as errors
> 
> Looking at the git logs it seems this was added via:
> 
> commit cf1fc187628913070c3e418ce0e205732435aa2f
> Author: Josh Cartwright <joshc@...eaurora.org>
> Date:   Tue Sep 23 15:59:53 2014 -0500
> 
>     pinctrl: qcom: use restart_notifier mechanism for ps_hold
> 
> 
> However, there is literally nothing else in the tree that calls or
> provides those functions:
> 
> [jwboyer@...er linux]$ git grep unregister_restart_handler
> drivers/pinctrl/qcom/pinctrl-msm.c:     unregister_restart_handler(&pctrl->resta
> [jwboyer@...er linux]$
> 
> 
> I'm rather confused.  How was this commit built and tested?

This may be my fault for not clearly stating that this particular patch
was dependent on Guenter's restart notifier patchset.  This patch was
applied to linusw's tree without these patches.   Perhaps it should be
dropped for now until the restart_notifier stuff lands?

   Josh

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