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ATAPI_CHECK_DMA(9) | libata Core Internals | ATAPI_CHECK_DMA(9) |
NAME¶
atapi_check_dma - Check whether ATAPI DMA can be supportedSYNOPSIS¶
int
atapi_check_dma(struct ata_queued_cmd * qc);
ARGUMENTS¶
qcMetadata 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 otherwiseAUTHOR¶
Jeff GarzikAuthor.
COPYRIGHT¶
January 2017 | Kernel Hackers Manual 4.8. |