linux-kernel - Re: [PATCH v5 3/6] kernel/reboot.c: export pm_power_off

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Message-ID: <1497872109.5380.10.camel@nxp.com>
Date:   Mon, 19 Jun 2017 14:35:09 +0300
From:   Leonard Crestez <leonard.crestez@....com>
To:     Oleksij Rempel <o.rempel@...gutronix.de>
CC:     Andrew Morton <akpm@...ux-foundation.org>,
        <devicetree@...r.kernel.org>,
        Fabio Estevam <fabio.estevam@....com>, <kernel@...gutronix.de>,
        Liam Girdwood <lgirdwood@...il.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-clk@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Mark Brown <broonie@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "Michael Turquette" <mturquette@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Shawn Guo <shawnguo@...nel.org>,
        Stephen Boyd <sboyd@...eaurora.org>
Subject: Re: [PATCH v5 3/6] kernel/reboot.c: export pm_power_off_prepare

On Mon, 2017-06-19 at 07:02 +0200, Oleksij Rempel wrote:
> Export pm_power_off_prepare. It is needed to implement power off on
> Freescale/NXP iMX6 based boards with external power management
> integrated circuit (PMIC).
> 
> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
> ---
>  kernel/reboot.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/kernel/reboot.c b/kernel/reboot.c
> index bd30a973fe94..a6903bf772c7 100644
> --- a/kernel/reboot.c
> +++ b/kernel/reboot.c
> @@ -49,6 +49,7 @@ int reboot_force;
>   */
>  
>  void (*pm_power_off_prepare)(void);
> +EXPORT_SYMBOL(pm_power_off_prepare);
>  
Could you register a reboot notifier in the pfuze driver instead? Right
now the only user of pm_power_off_prepare is ACPI so this alternative
seems less intrusive.

--
Regards,
Leonard