This adds a local variable to store the user pointer cast result from arg.
It avoids the repeated casts in the code when more ioctls are added.
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Tested-by: Yanting Jiang <yanting.jiang@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20230718135551.6592-22-yi.l.liu@intel.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
{
struct vfio_device_file *df = filep->private_data;
struct vfio_device *device = df->device;
+ void __user *uptr = (void __user *)arg;
int ret;
/* Paired with smp_store_release() following vfio_df_open() */
switch (cmd) {
case VFIO_DEVICE_FEATURE:
- ret = vfio_ioctl_device_feature(device, (void __user *)arg);
+ ret = vfio_ioctl_device_feature(device, uptr);
break;
default: