From: Tejun Heo Date: Tue, 20 Feb 2007 14:20:27 +0000 (+0900) Subject: libata: separate out ata_ncq_enabled() X-Git-Tag: v2.6.21-rc2~25^2~37 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=6d1245bf294e9ea65b3717be9fa0338bfb6ff6c9;p=linux-2.6-omap-h63xx.git libata: separate out ata_ncq_enabled() Separate out ata_ncq_enabled(). Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index b71a7ef3f92..63c808d17c2 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -315,9 +315,7 @@ int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; tf->flags |= tf_flags; - if ((dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF | - ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ && - likely(tag != ATA_TAG_INTERNAL)) { + if (ata_ncq_enabled(dev) && likely(tag != ATA_TAG_INTERNAL)) { /* yay, NCQ */ if (!lba_48_ok(block, n_block)) return -ERANGE; 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.