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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 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
AUTHOR¶
Jeff Garzik
Author.
COPYRIGHT¶
| January 2017 | Kernel Hackers Manual 4.8. |