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authorJason Gunthorpe <jgg@nvidia.com>2021-08-05 22:19:10 -0300
committerAlex Williamson <alex.williamson@redhat.com>2021-08-11 09:50:11 -0600
commiteb24c1007e6852e024dc33b0dd9617b8500a1291 (patch)
treeabf2e116298a19e8dbcbd08b3d5cb327b801479c
parentdd574d9b728d583e30289244be139f82d0de3fb3 (diff)
vfio: Remove struct vfio_device_ops open/release
Nothing uses this anymore, delete it. Signed-off-by: Yishai Hadas <yishaih@nvidia.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Link: https://lore.kernel.org/r/14-v4-9ea22c5e6afb+1adf-vfio_reflck_jgg@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
-rw-r--r--drivers/vfio/mdev/vfio_mdev.c22
-rw-r--r--drivers/vfio/vfio.c14
-rw-r--r--include/linux/mdev.h7
-rw-r--r--include/linux/vfio.h4
4 files changed, 1 insertions, 46 deletions
diff --git a/drivers/vfio/mdev/vfio_mdev.c b/drivers/vfio/mdev/vfio_mdev.c
index e12196ffd487..7a9883048216 100644
--- a/drivers/vfio/mdev/vfio_mdev.c
+++ b/drivers/vfio/mdev/vfio_mdev.c
@@ -37,26 +37,6 @@ static void vfio_mdev_close_device(struct vfio_device *core_vdev)
parent->ops->close_device(mdev);
}
-static int vfio_mdev_open(struct vfio_device *core_vdev)
-{
- struct mdev_device *mdev = to_mdev_device(core_vdev->dev);
- struct mdev_parent *parent = mdev->type->parent;
-
- if (unlikely(!parent->ops->open))
- return 0;
-
- return parent->ops->open(mdev);
-}
-
-static void vfio_mdev_release(struct vfio_device *core_vdev)
-{
- struct mdev_device *mdev = to_mdev_device(core_vdev->dev);
- struct mdev_parent *parent = mdev->type->parent;
-
- if (likely(parent->ops->release))
- parent->ops->release(mdev);
-}
-
static long vfio_mdev_unlocked_ioctl(struct vfio_device *core_vdev,
unsigned int cmd, unsigned long arg)
{
@@ -122,8 +102,6 @@ static const struct vfio_device_ops vfio_mdev_dev_ops = {
.name = "vfio-mdev",
.open_device = vfio_mdev_open_device,
.close_device = vfio_mdev_close_device,
- .open = vfio_mdev_open,
- .release = vfio_mdev_release,
.ioctl = vfio_mdev_unlocked_ioctl,
.read = vfio_mdev_read,
.write = vfio_mdev_write,
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 9cc17768c425..3c034fe14ccb 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -1470,19 +1470,13 @@ static int vfio_group_get_device_fd(struct vfio_group *group, char *buf)
}
mutex_unlock(&device->dev_set->lock);
- if (device->ops->open) {
- ret = device->ops->open(device);
- if (ret)
- goto err_close_device;
- }
-
/*
* We can't use anon_inode_getfd() because we need to modify
* the f_mode flags directly to allow more than just ioctls
*/
fdno = ret = get_unused_fd_flags(O_CLOEXEC);
if (ret < 0)
- goto err_release;
+ goto err_close_device;
filep = anon_inode_getfile("[vfio-device]", &vfio_device_fops,
device, O_RDWR);
@@ -1509,9 +1503,6 @@ static int vfio_group_get_device_fd(struct vfio_group *group, char *buf)
err_fd:
put_unused_fd(fdno);
-err_release:
- if (device->ops->release)
- device->ops->release(device);
err_close_device:
mutex_lock(&device->dev_set->lock);
if (device->open_count == 1 && device->ops->close_device)
@@ -1659,9 +1650,6 @@ static int vfio_device_fops_release(struct inode *inode, struct file *filep)
{
struct vfio_device *device = filep->private_data;
- if (device->ops->release)
- device->ops->release(device);
-
mutex_lock(&device->dev_set->lock);
if (!--device->open_count && device->ops->close_device)
device->ops->close_device(device);
diff --git a/include/linux/mdev.h b/include/linux/mdev.h
index cb5b7ed1d7c3..68427e8fadeb 100644
--- a/include/linux/mdev.h
+++ b/include/linux/mdev.h
@@ -72,11 +72,6 @@ struct device *mtype_get_parent_dev(struct mdev_type *mtype);
* @mdev: mdev_device device structure which is being
* destroyed
* Returns integer: success (0) or error (< 0)
- * @open: Open mediated device.
- * @mdev: mediated device.
- * Returns integer: success (0) or error (< 0)
- * @release: release mediated device
- * @mdev: mediated device.
* @read: Read emulation callback
* @mdev: mediated device structure
* @buf: read buffer
@@ -113,8 +108,6 @@ struct mdev_parent_ops {
int (*remove)(struct mdev_device *mdev);
int (*open_device)(struct mdev_device *mdev);
void (*close_device)(struct mdev_device *mdev);
- int (*open)(struct mdev_device *mdev);
- void (*release)(struct mdev_device *mdev);
ssize_t (*read)(struct mdev_device *mdev, char __user *buf,
size_t count, loff_t *ppos);
ssize_t (*write)(struct mdev_device *mdev, const char __user *buf,
diff --git a/include/linux/vfio.h b/include/linux/vfio.h
index f0e6a72875e4..b53a9557884a 100644
--- a/include/linux/vfio.h
+++ b/include/linux/vfio.h
@@ -46,8 +46,6 @@ struct vfio_device {
*
* @open_device: Called when the first file descriptor is opened for this device
* @close_device: Opposite of open_device
- * @open: Called when userspace creates new file descriptor for device
- * @release: Called when userspace releases file descriptor for device
* @read: Perform read(2) on device file descriptor
* @write: Perform write(2) on device file descriptor
* @ioctl: Perform ioctl(2) on device file descriptor, supporting VFIO_DEVICE_*
@@ -62,8 +60,6 @@ struct vfio_device_ops {
char *name;
int (*open_device)(struct vfio_device *vdev);
void (*close_device)(struct vfio_device *vdev);
- int (*open)(struct vfio_device *vdev);
- void (*release)(struct vfio_device *vdev);
ssize_t (*read)(struct vfio_device *vdev, char __user *buf,
size_t count, loff_t *ppos);
ssize_t (*write)(struct vfio_device *vdev, const char __user *buf,