linux-kernel - Re: [PATCH 0/5] ACPI / scan: Make it possible to use the container hotplug with other scan handlers

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Date:	Wed, 19 Jun 2013 10:37:27 -0700
From:	Tony Luck <tony.luck@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Toshi Kani <toshi.kani@...com>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"Lu, Aaron" <aaron.lu@...el.com>
Subject: Re: [PATCH 0/5] ACPI / scan: Make it possible to use the container
 hotplug with other scan handlers

> Can you please apply the appended patch on top of it and see if the system
> still works then?

Still works with this patch.

-Tony

> ---
>  drivers/acpi/scan.c  |    3 +++
>  drivers/acpi/video.c |    3 ---
>  2 files changed, 3 insertions(+), 3 deletions(-)
>
> Index: linux-pm/drivers/acpi/scan.c
> ===================================================================
> --- linux-pm.orig/drivers/acpi/scan.c
> +++ linux-pm/drivers/acpi/scan.c
> @@ -939,6 +939,9 @@ static int acpi_device_probe(struct devi
>         struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver);
>         int ret;
>
> +       if (acpi_dev->handler)
> +               return -EINVAL;
> +
>         if (!acpi_drv->ops.add)
>                 return -ENOSYS;
>
> Index: linux-pm/drivers/acpi/video.c
> ===================================================================
> --- linux-pm.orig/drivers/acpi/video.c
> +++ linux-pm/drivers/acpi/video.c
> @@ -1722,9 +1722,6 @@ static int acpi_video_bus_add(struct acp
>         int error;
>         acpi_status status;
>
> -       if (device->handler)
> -               return -EINVAL;
> -
>         status = acpi_walk_namespace(ACPI_TYPE_DEVICE,
>                                 device->parent->handle, 1,
>                                 acpi_video_bus_match, NULL,
>
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