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| author | Tejun Heo <htejun@gmail.com> | 2008-04-07 22:47:22 +0900 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-04-17 15:44:25 -0400 |
| commit | 071f44b1d2c051641b62a3571223314737ccbe59 (patch) | |
| tree | a07794c8109e5d82a78223ae0159eadbf862c463 /drivers/ata/libata-scsi.c | |
| parent | 48515f6c006c2a9d7b624ee8ad068018c2d3fe0e (diff) | |
| download | linux-071f44b1d2c051641b62a3571223314737ccbe59.tar.gz linux-071f44b1d2c051641b62a3571223314737ccbe59.tar.bz2 linux-071f44b1d2c051641b62a3571223314737ccbe59.zip | |
libata: implement PMP helpers
Implement helpers to test whether PMP is supported, attached and
determine pmp number to use when issuing SRST to a link. While at it,
move ata_is_host_link() so that it's together with the two new PMP
helpers.
This change simplifies LLDs and helps making PMP support optional.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Diffstat (limited to 'drivers/ata/libata-scsi.c')
| -rw-r--r-- | drivers/ata/libata-scsi.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index a70881c408e5..fedf62de9460 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -2617,7 +2617,7 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc) static struct ata_device *ata_find_dev(struct ata_port *ap, int devno) { - if (ap->nr_pmp_links == 0) { + if (!sata_pmp_attached(ap)) { if (likely(devno < ata_link_max_devices(&ap->link))) return &ap->link.device[devno]; } else { @@ -2634,7 +2634,7 @@ static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, int devno; /* skip commands not addressed to targets we simulate */ - if (ap->nr_pmp_links == 0) { + if (!sata_pmp_attached(ap)) { if (unlikely(scsidev->channel || scsidev->lun)) return NULL; devno = scsidev->id; @@ -3492,7 +3492,7 @@ static int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, if (lun != SCAN_WILD_CARD && lun) return -EINVAL; - if (ap->nr_pmp_links == 0) { + if (!sata_pmp_attached(ap)) { if (channel != SCAN_WILD_CARD && channel) return -EINVAL; devno = id; |