linux-kernel - Re: [PATCH v3 1/2] ACPI: Add stubs for wakeup handler functions

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Date:   Fri, 22 Oct 2021 14:54:26 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Mario Limonciello <mario.limonciello@....com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Basavaraj Natikar <Basavaraj.Natikar@....com>,
        Shyam Sundar S K <Shyam-sundar.S-k@....com>,
        "open list:PIN CONTROL SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Nehal Shah <Nehal-bakulchandra.Shah@....com>,
        Mario Limonciello <mario.limonciello@....com>,
        Linux ACPI <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH v3 1/2] ACPI: Add stubs for wakeup handler functions

CC: linux-acpi

On Tuesday, October 19, 2021 6:04:00 PM CEST Mario Limonciello wrote:
> commit ddfd9dcf270c ("ACPI: PM: Add acpi_[un]register_wakeup_handler()")
> added new functions for drivers to use during the s2idle wakeup path, but
> didn't add stubs for when CONFIG_ACPI wasn't set.
> 
> Add those stubs in for other drivers to be able to use.
> 
> Fixes: ddfd9dcf270c ("ACPI: PM: Add acpi_[un]register_wakeup_handler()")
> Signed-off-by: Mario Limonciello <mario.limonciello@....com>
> ---
>  include/linux/acpi.h | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/include/linux/acpi.h b/include/linux/acpi.h
> index 72e4f7fd268c..b31bcc0f4c89 100644
> --- a/include/linux/acpi.h
> +++ b/include/linux/acpi.h
> @@ -976,6 +976,14 @@ static inline int acpi_get_local_address(acpi_handle handle, u32 *addr)
>  	return -ENODEV;
>  }
>  
> +static inline int acpi_register_wakeup_handler(
> +	int wake_irq, bool (*wakeup)(void *context), void *context)
> +{
> +	return -EINVAL;

-ENOTSUPP ?

> +}
> +static inline void acpi_unregister_wakeup_handler(
> +	bool (*wakeup)(void *context), void *context) { }
> +
>  #endif	/* !CONFIG_ACPI */
>  
>  #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
>