ata_std_qc_defer9
Check whether a qc needs to be deferred
Usage
int ata_std_qc_defer(struct ata_queued_cmd * qc);
Arguments
qc
ATA command in question
Overview
Non-NCQ commands cannot run with any other command, NCQ or not. As upper layer only knows the queue depth, we are responsible for maintaining exclusion. This function checks whether a new command qc can be issued.
LOCKING: spin_lock_irqsave(host lock)
Return
ATA_DEFER_* if deferring is needed, 0 otherwise.
Releases
6 releases since Debian 4.0 (Etch); the text changed 5 times.