linux-kernel - Re: [RFC PATCH v2 12/35] ACPI: Use the acpi_device_is

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Date:   Thu, 14 Sep 2023 13:04:55 +0100
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     James Morse <james.morse@....com>
CC:     <linux-pm@...r.kernel.org>, <loongarch@...ts.linux.dev>,
        <linux-acpi@...r.kernel.org>, <linux-arch@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-riscv@...ts.infradead.org>, <kvmarm@...ts.linux.dev>,
        <x86@...nel.org>, Salil Mehta <salil.mehta@...wei.com>,
        Russell King <linux@...linux.org.uk>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        <jianyong.wu@....com>, <justin.he@....com>
Subject: Re: [RFC PATCH v2 12/35] ACPI: Use the acpi_device_is_present()
 helper in more places

On Wed, 13 Sep 2023 16:38:00 +0000
James Morse <james.morse@....com> wrote:

> acpi_device_is_present() checks the present or functional bits
> from the cached copy of _STA.
> 
> A few places open-code this check. Use the helper instead to
> improve readability.
> 
> Signed-off-by: James Morse <james.morse@....com>

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>

Pull this one out and send it upstream in advance of the rest.

Jonathan


> ---
>  drivers/acpi/scan.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
> index 691d4b7686ee..ed01e19514ef 100644
> --- a/drivers/acpi/scan.c
> +++ b/drivers/acpi/scan.c
> @@ -304,7 +304,7 @@ static int acpi_scan_device_check(struct acpi_device *adev)
>  	int error;
>  
>  	acpi_bus_get_status(adev);
> -	if (adev->status.present || adev->status.functional) {
> +	if (acpi_device_is_present(adev)) {
>  		/*
>  		 * This function is only called for device objects for which
>  		 * matching scan handlers exist.  The only situation in which
> @@ -338,7 +338,7 @@ static int acpi_scan_bus_check(struct acpi_device *adev, void *not_used)
>  	int error;
>  
>  	acpi_bus_get_status(adev);
> -	if (!(adev->status.present || adev->status.functional)) {
> +	if (!acpi_device_is_present(adev)) {
>  		acpi_scan_device_not_present(adev);
>  		return 0;
>  	}