ata_check_atapi_dma9
Check whether atapi dma can be supported
Usage
int ata_check_atapi_dma(struct ata_queued_cmd * qc);
Arguments
qc
Metadata associated with taskfile to check
Overview
Allow low-level driver to filter ATA PACKET commands, returning a status indicating whether or not it is OK to use DMA for the supplied PACKET command.
Locking
spin_lock_irqsave(host_set lock)
Returns
0 when ATAPI DMA can be used nonzero otherwise