Name
ata_check_atapi_dma —
Check whether ATAPI DMA can be supported
Synopsis
int ata_check_atapi_dma (struct ata_queued_cmd * qc);
Arguments
qc
Metadata associated with taskfile to check
Description
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