diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/libata.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index 5db50fa594a..5233e47eeb8 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1033,6 +1033,21 @@ static inline u8 ata_chk_status(struct ata_port *ap) return ap->ops->check_status(ap); } +/** + * ata_ncq_enabled - Test whether NCQ is enabled + * @dev: ATA device to test for + * + * LOCKING: + * spin_lock_irqsave(host lock) + * + * RETURNS: + * 1 if NCQ is enabled for @dev, 0 otherwise. + */ +static inline int ata_ncq_enabled(struct ata_device *dev) +{ + return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | + ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ; +} /** * ata_pause - Flush writes and pause 400 nanoseconds. |