linux-kernel - Re: [PATCH v8 14/22] ACPI: update ej_event interface to take acpi

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Date:	Sun, 13 Jan 2013 00:40:37 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>, Len Brown <lenb@...nel.org>,
	Taku Izumi <izumi.taku@...fujitsu.com>,
	Jiang Liu <jiang.liu@...wei.com>, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH v8 14/22] ACPI: update ej_event interface to take acpi_device

On Friday, January 11, 2013 02:40:41 PM Yinghai Lu wrote:
> Should use acpi_device pointer directly instead of use handle and
> get the device pointer again later.

Looks good.

I can take this one right now if you want.

Thanks,
Rafael


> Signed-off-by: Yinghai Lu <yinghai@...nel.org>
> ---
>  drivers/acpi/acpi_memhotplug.c  |    2 +-
>  drivers/acpi/processor_driver.c |    2 +-
>  drivers/acpi/scan.c             |   14 ++++----------
>  include/acpi/acpi_bus.h         |    2 +-
>  4 files changed, 7 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
> index 327ab44..eaddb7a 100644
> --- a/drivers/acpi/acpi_memhotplug.c
> +++ b/drivers/acpi/acpi_memhotplug.c
> @@ -361,7 +361,7 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
>  			break;
>  		}
>  
> -		ej_event->handle = handle;
> +		ej_event->device = device;
>  		ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
>  		acpi_os_hotplug_execute(acpi_bus_hot_remove_device,
>  					(void *)ej_event);
> diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
> index 0777663..a24ee43 100644
> --- a/drivers/acpi/processor_driver.c
> +++ b/drivers/acpi/processor_driver.c
> @@ -733,7 +733,7 @@ static void acpi_processor_hotplug_notify(acpi_handle handle,
>  			break;
>  		}
>  
> -		ej_event->handle = handle;
> +		ej_event->device = device;
>  		ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
>  		acpi_os_hotplug_execute(acpi_bus_hot_remove_device,
>  					(void *)ej_event);
> diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
> index 8883539..f4c6305 100644
> --- a/drivers/acpi/scan.c
> +++ b/drivers/acpi/scan.c
> @@ -116,20 +116,14 @@ static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL);
>  void acpi_bus_hot_remove_device(void *context)
>  {
>  	struct acpi_eject_event *ej_event = (struct acpi_eject_event *) context;
> -	struct acpi_device *device;
> -	acpi_handle handle = ej_event->handle;
> +	struct acpi_device *device = ej_event->device;
> +	acpi_handle handle = device->handle;
>  	acpi_handle temp;
>  	struct acpi_object_list arg_list;
>  	union acpi_object arg;
>  	acpi_status status = AE_OK;
>  	u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */
>  
> -	if (acpi_bus_get_device(handle, &device))
> -		goto err_out;
> -
> -	if (!device)
> -		goto err_out;
> -
>  	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
>  		"Hot-removing device %s...\n", dev_name(&device->dev)));
>  
> @@ -215,7 +209,7 @@ acpi_eject_store(struct device *d, struct device_attribute *attr,
>  		goto err;
>  	}
>  
> -	ej_event->handle = acpi_device->handle;
> +	ej_event->device = acpi_device;
>  	if (acpi_device->flags.eject_pending) {
>  		/* event originated from ACPI eject notification */
>  		ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
> @@ -223,7 +217,7 @@ acpi_eject_store(struct device *d, struct device_attribute *attr,
>  	} else {
>  		/* event originated from user */
>  		ej_event->event = ACPI_OST_EC_OSPM_EJECT;
> -		(void) acpi_evaluate_hotplug_ost(ej_event->handle,
> +		(void) acpi_evaluate_hotplug_ost(acpi_device->handle,
>  			ej_event->event, ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
>  	}
>  
> diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
> index 2246ba9..181ff2d 100644
> --- a/include/acpi/acpi_bus.h
> +++ b/include/acpi/acpi_bus.h
> @@ -309,7 +309,7 @@ struct acpi_bus_event {
>  };
>  
>  struct acpi_eject_event {
> -	acpi_handle	handle;
> +	struct acpi_device	*device;
>  	u32		event;
>  };
>  
> 
-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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