linux-kernel - Re: [PATCH v2 2/2] vfio/mdev: Removed unused and redundant API for mdev UUID

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Message-ID: <20190816172234.260e9ade.cohuck@redhat.com>
Date:   Fri, 16 Aug 2019 17:22:34 +0200
From:   Cornelia Huck <cohuck@...hat.com>
To:     Parav Pandit <parav@...lanox.com>
Cc:     kvm@...r.kernel.org, kwankhede@...dia.com,
        linux-kernel@...r.kernel.org, alex.williamson@...hat.com,
        cjia@...dia.com
Subject: Re: [PATCH v2 2/2] vfio/mdev: Removed unused and redundant API for
 mdev UUID

On Thu,  8 Aug 2019 09:12:55 -0500
Parav Pandit <parav@...lanox.com> wrote:

> There is no single production driver who is interested in mdev device
> uuid. Currently UUID is mainly used to derive a device name.
> Additionally mdev device name is already available using core kernel
> API dev_name().
> 
> Hence removed unused exported symbol.

FWIW, I just sent
https://lore.kernel.org/kvm/20190816151505.9853-1-cohuck@redhat.com/,
for which dev_name() is not an option.

> 
> Reviewed-by: Cornelia Huck <cohuck@...hat.com>
> Signed-off-by: Parav Pandit <parav@...lanox.com>
> ---
> Changelog:
> v0->v1:
>  - Updated commit log to address comments from Cornelia
> ---
>  drivers/vfio/mdev/mdev_core.c | 6 ------
>  include/linux/mdev.h          | 1 -
>  2 files changed, 7 deletions(-)
> 
> diff --git a/drivers/vfio/mdev/mdev_core.c b/drivers/vfio/mdev/mdev_core.c
> index b558d4cfd082..c2b809cbe59f 100644
> --- a/drivers/vfio/mdev/mdev_core.c
> +++ b/drivers/vfio/mdev/mdev_core.c
> @@ -57,12 +57,6 @@ struct mdev_device *mdev_from_dev(struct device *dev)
>  }
>  EXPORT_SYMBOL(mdev_from_dev);
>  
> -const guid_t *mdev_uuid(struct mdev_device *mdev)
> -{
> -	return &mdev->uuid;
> -}
> -EXPORT_SYMBOL(mdev_uuid);
> -
>  /* Should be called holding parent_list_lock */
>  static struct mdev_parent *__find_parent_device(struct device *dev)
>  {
> diff --git a/include/linux/mdev.h b/include/linux/mdev.h
> index 0ce30ca78db0..375a5830c3d8 100644
> --- a/include/linux/mdev.h
> +++ b/include/linux/mdev.h
> @@ -131,7 +131,6 @@ struct mdev_driver {
>  
>  void *mdev_get_drvdata(struct mdev_device *mdev);
>  void mdev_set_drvdata(struct mdev_device *mdev, void *data);
> -const guid_t *mdev_uuid(struct mdev_device *mdev);
>  
>  extern struct bus_type mdev_bus_type;
>