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[PATCH] libata: implement ata_dev_absent()

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For the time being we cannot use ata_dev_present() as it was renamed
to ata_dev_enabled() but we still need presence test.  Implement
negation of the test.  Conveniently, the negated result is needed in
more places.  This is suggested by Jeff Garzik.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2006-04-02 17:54:46 +09:00 committed by Jeff Garzik
parent 852ee16a91
commit 002c8054fa
1 changed files with 10 additions and 0 deletions
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10
include/linux/libata.h
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@ -682,6 +682,11 @@ static inline unsigned int ata_class_disabled(unsigned int class)
return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP;
}
static inline unsigned int ata_class_absent(unsigned int class)
{
return !ata_class_enabled(class) && !ata_class_disabled(class);
}
static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
{
return ata_class_enabled(dev->class);
@ -692,6 +697,11 @@ static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
return ata_class_disabled(dev->class);
}
static inline unsigned int ata_dev_absent(const struct ata_device *dev)
{
return ata_class_absent(dev->class);
}
static inline u8 ata_chk_status(struct ata_port *ap)
{
return ap->ops->check_status(ap);