Warnings before patch:
files: ['drivers/vfio/vfio_main.c']
Warning: drivers/vfio/vfio_main.c:1452 No description found for return value of 'vfio_file_is_valid'
Warning: drivers/vfio/vfio_main.c:1468 No description found for return value of 'vfio_file_enforced_coherent'
Warning: drivers/vfio/vfio_main.c:1452 No description found for return value of 'vfio_file_is_valid'
Warning: drivers/vfio/vfio_main.c:1468 No description found for return value of 'vfio_file_enforced_coherent'

Current warnings:
files: ['drivers/vfio/vfio_main.c']
Warning: drivers/vfio/vfio_main.c:1452 No description found for return value of 'vfio_file_is_valid'
Warning: drivers/vfio/vfio_main.c:1468 No description found for return value of 'vfio_file_enforced_coherent'
Warning: drivers/vfio/vfio_main.c:1452 No description found for return value of 'vfio_file_is_valid'
Warning: drivers/vfio/vfio_main.c:1468 No description found for return value of 'vfio_file_enforced_coherent'

Warnings before: 4 after: 4