Man page 9 : ata_phys_link_offline

ata_phys_link_offline - test whether the given link is offline

bool ata_phys_link_offline(struct ata_link *  link );

link
    ATA link to test

Test whether link is offline. Note that this function returns 0 if offline status of link cannot be obtained, so ata_link_online(link) != !ata_link_offline(link).

None.

True if the port offline status is available and offline.

Jeff Garzik
    Author.