linux-kernel - Re: [PATCH 1/2] ACPI / scan: Fix acpi_bus_get_device() check in acpi_match

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Message-ID: <CAE9FiQXPaMCSyH72qqu-NvPbPkeUbQq5Dcb_SdKz6SEiSmdR7Q@mail.gmail.com>
Date:	Thu, 31 Jan 2013 10:38:17 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Toshi Kani <toshi.kani@...com>
Subject: Re: [PATCH 1/2] ACPI / scan: Fix acpi_bus_get_device() check in acpi_match_device()

On Wed, Jan 30, 2013 at 2:03 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
>
> Since acpi_bus_get_device() returns int and not acpi_status, change
> acpi_match_device() so that it doesn't apply ACPI_FAILURE() to the
> return value of acpi_bus_get_device().
>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> ---
>  drivers/acpi/scan.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> Index: linux-pm/drivers/acpi/scan.c
> ===================================================================
> --- linux-pm.orig/drivers/acpi/scan.c
> +++ linux-pm/drivers/acpi/scan.c
> @@ -491,9 +491,9 @@ const struct acpi_device_id *acpi_match_
>                                                const struct device *dev)
>  {
>         struct acpi_device *adev;
> +       acpi_handle handle = ACPI_HANDLE(dev);
>
> -       if (!ids || !ACPI_HANDLE(dev)
> -           || ACPI_FAILURE(acpi_bus_get_device(ACPI_HANDLE(dev), &adev)))
> +       if (!ids || !handle || acpi_bus_get_device(handle, &adev))
>                 return NULL;
>
>         return __acpi_match_device(adev, ids);
>

Acked-by: Yinghai Lu <yinghai@...nel.org>
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