atapi_check_dma(9) - phpMan
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
Kernel Hackers Manual 4.8. January 2017 ATAPI_CHECK_DMA(9)
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