vfio iommu: typecast corrections

Fixes sparse warnings by adding '__user' in typecast for
copy_[from,to]_user()

Fixes: d6a4c185660c ("vfio iommu: Implementation of ioctl for dirty pages tracking")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index 0e4e717..391fafe 100644 (file)
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -998,14 +998,14 @@ static int update_user_bitmap(u64 __user *bitmap, struct vfio_iommu *iommu,
                                  nbits + shift);
 
                if (copy_from_user(&leftover,
-                                  (const void *)(bitmap + copy_offset),
+                                  (void __user *)(bitmap + copy_offset),
                                   sizeof(leftover)))
                        return -EFAULT;
 
                bitmap_or(dma->bitmap, dma->bitmap, &leftover, shift);
        }
 
-       if (copy_to_user((void *)(bitmap + copy_offset), dma->bitmap,
+       if (copy_to_user((void __user *)(bitmap + copy_offset), dma->bitmap,
                         DIRTY_BITMAP_BYTES(nbits + shift)))
                return -EFAULT;