Name

atapi_check_dma — Check whether ATAPI DMA can be supported

Synopsis

int atapi_check_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 lock)

Return

0 when ATAPI DMA can be used nonzero otherwise