On Wed, Oct 3, 2012 at 7:00 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
> To use to control the delay attach driver for acpi_device.
<blinks>
I am not sure what this says. Can you please explain how it controls
the delaying of
attaching drivers?
>
> Will use bus notifier to toggle this bits when needed.
Will use ..? In a subsequent patch? Which patch? And when is this
needed? Is there a patch that needs this?
>
> Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
> ---
> drivers/acpi/scan.c | 8 +++++++-
> include/acpi/acpi_bus.h | 1 +
> 2 files changed, 8 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
> index d1ecca2..cbb3ed1 100644
> --- a/drivers/acpi/scan.c
> +++ b/drivers/acpi/scan.c
> @@ -333,7 +333,12 @@ static void acpi_device_release(struct device *dev)
> static int acpi_bus_match(struct device *dev, struct device_driver *drv)
> {
> struct acpi_device *acpi_dev = to_acpi_device(dev);
> - struct acpi_driver *acpi_drv = to_acpi_driver(drv);
> + struct acpi_driver *acpi_drv;
> +
> + if (!acpi_dev->drivers_autoprobe)
> + return 0;
> +
> + acpi_drv = to_acpi_driver(drv);
>
> return !acpi_match_device_ids(acpi_dev, acpi_drv->ids);
> }
> @@ -1268,6 +1273,7 @@ static int acpi_add_single_object(struct acpi_device **child,
> device->parent = acpi_bus_get_parent(handle);
> device->bus_ops = *ops; /* workround for not call .start */
> STRUCT_TO_INT(device->status) = sta;
> + device->drivers_autoprobe = true;
>
> acpi_device_get_busid(device);
>
> diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
> index bde976e..969544e 100644
> --- a/include/acpi/acpi_bus.h
> +++ b/include/acpi/acpi_bus.h
> @@ -304,6 +304,7 @@ struct acpi_device {
> struct device dev;
> struct acpi_bus_ops bus_ops; /* workaround for different code path for hotplug */
> enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
> + bool drivers_autoprobe;
> };
>
> static inline void *acpi_driver_data(struct acpi_device *d)
> --
> 1.7.7
>
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