Re: [PATCH v2 09/28] drivers: Add generic match helper by ACPI_COMPANION device

["Rafael J. Wysocki" <rafael@kernel.org>]

On Fri, Jun 14, 2019 at 7:55 PM Suzuki K Poulose <suzuki.poulose@arm.com> wrote:
>
> Add a generic helper to match a device by the ACPI_COMPANION device.
> This will be later used for providing wrappers for
> (bus/class/driver)_find_device().
>
> Cc: Len Brown <lenb@kernel.org>
> Cc: linux-acpi@vger.kernel.org
> Cc: linux-spi@vger.kernel.org
> Cc: Mark Brown <broonie@kernel.org>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: "Rafael J. Wysocki" <rafael@kernel.org>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>

Please fold this change into the patch adding users of device_match_acpi_dev().

> ---
>  drivers/base/core.c    | 6 ++++++
>  include/linux/device.h | 1 +
>  2 files changed, 7 insertions(+)
>
> diff --git a/drivers/base/core.c b/drivers/base/core.c
> index b827ca1..597095b 100644
> --- a/drivers/base/core.c
> +++ b/drivers/base/core.c
> @@ -3346,3 +3346,9 @@ int device_match_devt(struct device *dev, const void *pdevt)
>         return dev->devt == *(dev_t *)pdevt;
>  }
>  EXPORT_SYMBOL_GPL(device_match_devt);
> +
> +int device_match_acpi_dev(struct device *dev, const void *adev)
> +{
> +       return ACPI_COMPANION(dev) == adev;
> +}
> +EXPORT_SYMBOL(device_match_acpi_dev);
> diff --git a/include/linux/device.h b/include/linux/device.h
> index f315692..a03b50d 100644
> --- a/include/linux/device.h
> +++ b/include/linux/device.h
> @@ -166,6 +166,7 @@ void subsys_dev_iter_exit(struct subsys_dev_iter *iter);
>  int device_match_of_node(struct device *dev, const void *np);
>  int device_match_fwnode(struct device *dev, const void *fwnode);
>  int device_match_devt(struct device *dev, const void *pdevt);
> +int device_match_acpi_dev(struct device *dev, const void *adev);
>
>  int bus_for_each_dev(struct bus_type *bus, struct device *start, void *data,
>                      int (*fn)(struct device *dev, void *data));
> --
> 2.7.4
>