linux-kernel - [PATCH 0/4] Fix acpi_bus_get

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Message-ID: <5109E11A.5030400@jp.fujitsu.com>
Date:	Thu, 31 Jan 2013 12:12:26 +0900
From:	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Yinghai Lu <yinghai@...nel.org>, Toshi Kani <toshi.kani@...com>
Subject: [PATCH 0/4] Fix acpi_bus_get_device() check

Some functions use ACPI_SUCCESS/FAILURE for checking return value of
acpi_bus_get_device().

Following patches change not to apply ACPI_SUCCESS/FAILURE to the
return value of acpi_bus_get_device().

[PATCH 1/4] ACPI/PM: Fix acpi_bus_get_device() check in drivers/acpi/device_pm.c
[PATCH 2/4] ACPI/dock: Fix acpi_bus_get_device() check in drivers/acpi/ddock.c
[PATCH 3/4] PNPACPI: Fix acpi_bus_get_device() check in drivers/pnp/pnpacpi/core.c
[PATCH 4/4] GPU/i915: Fix acpi_bus_get_device() check in drivers/gpu/drm/i915/intel_opregion.c

2013/01/31 7:03, Rafael J. Wysocki 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);
>
> --
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