[PATCH 0/3] staging: comedi: adl_pci9118: redo DMA buffer allocation

[Ian Abbott]

"adl_pci9118" allocates more pages of DMA buffer than it uses, may
allocate half a double-buffer it does not use because it's the "wrong"
half that it managed to allocate (unlikely), and relies on virt_to_bus()
to treat generic kernel memory from get_free_pages() as coherent DMA
memory.  Correct the issues, using dma_alloc_coherent() to allocate the
DMA buffers.

1) staging: comedi: adl_pci9118: don't allocate 2nd DMA buffer on
   failure
2) staging: comedi: adl_pci9118: don't overallocate DMA buffer
3) staging: comedi: adl_pci9118: use dma_alloc_coherent()

 drivers/staging/comedi/Kconfig               |  2 +-
 drivers/staging/comedi/drivers/adl_pci9118.c | 40 ++++++++++++++--------------
 2 files changed, 21 insertions(+), 21 deletions(-)