From 67462037872d5ca57dc4674cccff191947b9b43e Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 24 Sep 2021 17:56:58 +0200 Subject: vfio: remove unused method from vfio_iommu_driver_ops The read, write and mmap methods are never implemented, so remove them. Signed-off-by: Christoph Hellwig Reviewed-by: Jason Gunthorpe Reviewed-by: Kevin Tian Link: https://lore.kernel.org/r/20210924155705.4258-9-hch@lst.de Signed-off-by: Alex Williamson --- drivers/vfio/vfio.c | 50 -------------------------------------------------- 1 file changed, 50 deletions(-) (limited to 'drivers/vfio') diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index 2508c8c39840..2c1c7316aa19 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -1276,62 +1276,12 @@ static int vfio_fops_release(struct inode *inode, struct file *filep) return 0; } -/* - * Once an iommu driver is set, we optionally pass read/write/mmap - * on to the driver, allowing management interfaces beyond ioctl. - */ -static ssize_t vfio_fops_read(struct file *filep, char __user *buf, - size_t count, loff_t *ppos) -{ - struct vfio_container *container = filep->private_data; - struct vfio_iommu_driver *driver; - ssize_t ret = -EINVAL; - - driver = container->iommu_driver; - if (likely(driver && driver->ops->read)) - ret = driver->ops->read(container->iommu_data, - buf, count, ppos); - - return ret; -} - -static ssize_t vfio_fops_write(struct file *filep, const char __user *buf, - size_t count, loff_t *ppos) -{ - struct vfio_container *container = filep->private_data; - struct vfio_iommu_driver *driver; - ssize_t ret = -EINVAL; - - driver = container->iommu_driver; - if (likely(driver && driver->ops->write)) - ret = driver->ops->write(container->iommu_data, - buf, count, ppos); - - return ret; -} - -static int vfio_fops_mmap(struct file *filep, struct vm_area_struct *vma) -{ - struct vfio_container *container = filep->private_data; - struct vfio_iommu_driver *driver; - int ret = -EINVAL; - - driver = container->iommu_driver; - if (likely(driver && driver->ops->mmap)) - ret = driver->ops->mmap(container->iommu_data, vma); - - return ret; -} - static const struct file_operations vfio_fops = { .owner = THIS_MODULE, .open = vfio_fops_open, .release = vfio_fops_release, - .read = vfio_fops_read, - .write = vfio_fops_write, .unlocked_ioctl = vfio_fops_unl_ioctl, .compat_ioctl = compat_ptr_ioctl, - .mmap = vfio_fops_mmap, }; /** -- cgit v1.2.3