In wd719x_queuecommand(), "scb" is mapped to streaming DMA:
scb->phys = dma_map_single(..., scb, ...);
Then "scb" is accessed at many places in this function, such as:
scb->SCB_options |= WD719X_SCB_FLAGS_AUTO_REQUEST_SENSE;
...
scb->data_length = 0;
scb->data_p = 0;
These accesses may cause data inconsistency between CPU cache and hardware.
I am not sure how to properly fix this problem, and thus I only report it.
Best wishes,
Jia-Ju Bai