linux-kernel - Re: [PATCH 1/3] ACPI: scan: substitute empty_zero_page with helper ZERO

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Message-ID: <CAJZ5v0hRBd8OEg1CJUQGhb6_59j-+-zZTid8kmMV9nUk2CF3EA@mail.gmail.com>
Date:   Thu, 3 Nov 2022 19:53:12 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Giulio Benetti <giulio.benetti@...ettiengineering.com>
Cc:     Arnd Bergmann <arnd@...db.de>, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org,
        linux-raid@...r.kernel.org,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>, Mark Brown <broonie@...nel.org>,
        Song Liu <song@...nel.org>
Subject: Re: [PATCH 1/3] ACPI: scan: substitute empty_zero_page with helper ZERO_PAGE(0)

On Tue, Oct 18, 2022 at 11:59 PM Giulio Benetti
<giulio.benetti@...ettiengineering.com> wrote:
>
> Not all zero page implementations use empty_zero_page global pointer so
> let's substitute empty_zero_page occurence with helper ZERO_PAGE(0).
>
> Signed-off-by: Giulio Benetti <giulio.benetti@...ettiengineering.com>
> ---
>  drivers/acpi/scan.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
> index 558664d169fc..4d2d274cc8ad 100644
> --- a/drivers/acpi/scan.c
> +++ b/drivers/acpi/scan.c
> @@ -30,7 +30,7 @@ extern struct acpi_device *acpi_root;
>  #define ACPI_BUS_HID                   "LNXSYBUS"
>  #define ACPI_BUS_DEVICE_NAME           "System Bus"
>
> -#define INVALID_ACPI_HANDLE    ((acpi_handle)empty_zero_page)
> +#define INVALID_ACPI_HANDLE    ((acpi_handle)ZERO_PAGE(0))
>
>  static const char *dummy_hid = "device";
>
> --

Applied as 6.2 material, thanks!