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vfio/mdev: remove mtype_get_parent_dev

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Just open code the dereferences in the only user.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Jason J. Herne <jjherne@linux.ibm.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Link: https://lore.kernel.org/r/20220923092652.100656-10-hch@lst.de
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Christoph Hellwig 2022-09-23 11:26:47 +02:00 committed by Alex Williamson
parent 062e720cd2
commit c7c1f38f6c
3 changed files with 1 additions and 14 deletions
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3
drivers/s390/cio/vfio_ccw_ops.c
View File

@ -62,8 +62,7 @@ static ssize_t available_instances_show(struct mdev_type *mtype,
struct mdev_type_attribute *attr,
char *buf)
{
struct vfio_ccw_private *private =
dev_get_drvdata(mtype_get_parent_dev(mtype));
struct vfio_ccw_private *private = dev_get_drvdata(mtype->parent->dev);
return sprintf(buf, "%d\n", atomic_read(&private->avail));
}

10
drivers/vfio/mdev/mdev_core.c
View File

@ -23,16 +23,6 @@ static struct class_compat *mdev_bus_compat_class;
static LIST_HEAD(mdev_list);
static DEFINE_MUTEX(mdev_list_lock);
/*
* Used in mdev_type_attribute sysfs functions to return the parent struct
* device
*/
struct device *mtype_get_parent_dev(struct mdev_type *mtype)
{
return mtype->parent->dev;
}
EXPORT_SYMBOL(mtype_get_parent_dev);
/* Caller must hold parent unreg_sem read or write lock */
static void mdev_device_remove_common(struct mdev_device *mdev)
{

2
include/linux/mdev.h
View File

@ -51,8 +51,6 @@ static inline struct mdev_device *to_mdev_device(struct device *dev)
return container_of(dev, struct mdev_device, dev);
}
struct device *mtype_get_parent_dev(struct mdev_type *mtype);
/* interface for exporting mdev supported type attributes */
struct mdev_type_attribute {
struct attribute attr;