[PATCH 5/8] vfio/mdev: remove mdev_from_dev

[Tian, Kevin]

> From: Christoph Hellwig
> Sent: Friday, June 3, 2022 2:33 PM
> 
> Just open code it in the only caller.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>

Reviewed-by: Kevin Tian <kevin.tian at intel.com>

> ---
>  drivers/vfio/mdev/mdev_core.c | 6 ++----
>  include/linux/mdev.h          | 4 ----
>  2 files changed, 2 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/vfio/mdev/mdev_core.c
> b/drivers/vfio/mdev/mdev_core.c
> index 34b01d45cfe9f..3575e893b5e43 100644
> --- a/drivers/vfio/mdev/mdev_core.c
> +++ b/drivers/vfio/mdev/mdev_core.c
> @@ -56,10 +56,8 @@ static void mdev_device_remove_common(struct
> mdev_device *mdev)
> 
>  static int mdev_device_remove_cb(struct device *dev, void *data)
>  {
> -	struct mdev_device *mdev = mdev_from_dev(dev);
> -
> -	if (mdev)
> -		mdev_device_remove_common(mdev);
> +	if (dev->bus == &mdev_bus_type)
> +		mdev_device_remove_common(to_mdev_device(dev));
>  	return 0;
>  }
> 
> diff --git a/include/linux/mdev.h b/include/linux/mdev.h
> index cbb53dcd20d9d..5811b5a52a511 100644
> --- a/include/linux/mdev.h
> +++ b/include/linux/mdev.h
> @@ -102,9 +102,5 @@ static inline struct device *mdev_dev(struct
> mdev_device *mdev)
>  {
>  	return &mdev->dev;
>  }
> -static inline struct mdev_device *mdev_from_dev(struct device *dev)
> -{
> -	return dev->bus == &mdev_bus_type ? to_mdev_device(dev) : NULL;
> -}
> 
>  #endif /* MDEV_H */
> --
> 2.30.2