diff options
Diffstat (limited to 'include/linux/libata.h')
| -rw-r--r-- | include/linux/libata.h | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index ca4493125fa0..62fa8cf677a1 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1030,15 +1030,26 @@ static inline unsigned int ata_dev_absent(const struct ata_device *dev) } /* - * port helpers + * link helpers */ -static inline int ata_port_max_devices(const struct ata_port *ap) +static inline int ata_link_max_devices(const struct ata_link *link) { - if (ap->flags & ATA_FLAG_SLAVE_POSS) + if (link->ap->flags & ATA_FLAG_SLAVE_POSS) return 2; return 1; } +#define ata_port_for_each_link(lk, ap) \ + for ((lk) = &(ap)->link; (lk); (lk) = NULL) + +#define ata_link_for_each_dev(dev, link) \ + for ((dev) = (link)->device; \ + (dev) < (link)->device + ata_link_max_devices(link) || ((dev) = NULL); \ + (dev)++) + +#define ata_link_for_each_dev_reverse(dev, link) \ + for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \ + (dev) >= (link)->device || ((dev) = NULL); (dev)--) static inline u8 ata_chk_status(struct ata_port *ap) { |