diff options
Diffstat (limited to 'drivers/ata/ahci.h')
| -rw-r--r-- | drivers/ata/ahci.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h index 17e4c06b20cb..8e895ae45c86 100644 --- a/drivers/ata/ahci.h +++ b/drivers/ata/ahci.h @@ -328,7 +328,7 @@ struct ahci_port_priv { struct ahci_host_priv { /* Input fields */ unsigned int flags; /* AHCI_HFLAG_* */ - u32 mask_port_map; /* mask out particular bits */ + u32 mask_port_map; /* Mask of valid ports */ void __iomem * mmio; /* bus-independent mem map */ u32 cap; /* cap to use */ @@ -379,6 +379,17 @@ struct ahci_host_priv { int port); }; +/* + * Return true if a port should be ignored because it is excluded from + * the host port map. + */ +static inline bool ahci_ignore_port(struct ahci_host_priv *hpriv, + unsigned int portid) +{ + return portid >= hpriv->nports || + !(hpriv->mask_port_map & (1 << portid)); +} + extern int ahci_ignore_sss; extern const struct attribute_group *ahci_shost_groups[]; |