"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(-) _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
