linux-kernel - Re: [PATCH v4 2/5] resource: Add irqresource

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Message-ID: <CAJZ5v0jzDSQ8URKkmBYh0P79P3v5OHCwgssnkyVMk1jpZ=DWyQ@mail.gmail.com>
Date:   Tue, 1 Dec 2020 20:02:31 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     John Garry <john.garry@...wei.com>
Cc:     "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Len Brown <lenb@...nel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        "open list:TARGET SUBSYSTEM" <linux-scsi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linuxarm <linuxarm@...wei.com>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        dwagner@...e.de
Subject: Re: [PATCH v4 2/5] resource: Add irqresource_disabled()

On Mon, Nov 30, 2020 at 6:41 PM John Garry <john.garry@...wei.com> wrote:
>
> Add a common function to set the fields for a irq resource to disabled,
> which mimics what is done in acpi_dev_irqresource_disabled(), with a view
> to replace that function.
>
> Signed-off-by: John Garry <john.garry@...wei.com>

Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

> ---
>  include/linux/ioport.h | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/include/linux/ioport.h b/include/linux/ioport.h
> index 5135d4b86cd6..f9bf374f9633 100644
> --- a/include/linux/ioport.h
> +++ b/include/linux/ioport.h
> @@ -307,6 +307,13 @@ struct resource *devm_request_free_mem_region(struct device *dev,
>  struct resource *request_free_mem_region(struct resource *base,
>                 unsigned long size, const char *name);
>
> +static inline void irqresource_disabled(struct resource *res, u32 irq)
> +{
> +       res->start = irq;
> +       res->end = irq;
> +       res->flags = IORESOURCE_IRQ | IORESOURCE_DISABLED | IORESOURCE_UNSET;
> +}
> +
>  #ifdef CONFIG_IO_STRICT_DEVMEM
>  void revoke_devmem(struct resource *res);
>  #else
> --
> 2.26.2
>