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| author |   Jeff Garzik <jgarzik@pobox.com> | 2005-10-03 15:55:19 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-10-03 15:55:19 -0400 |
| commit | 644dd0cc494702ecd0698f467de113ace9593888 (patch) | |
| tree | d49e781476dea85a4bfc1b05b6d15ed0a224a747 /drivers/scsi | |
| parent | Merge branch 'upstream' from master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev (diff) | |
| download | linux-dev-644dd0cc494702ecd0698f467de113ace9593888.tar.xz linux-dev-644dd0cc494702ecd0698f467de113ace9593888.zip | |
[libata] improve device scan
Replace SCSI's legacy "bang at the door" method of probing with one
directly controlled by the underlying ATA transport layer.
We now only call scsi_scan_target() for devices we find, rather than
probing every possible channel/id within a certain range.
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/libata-core.c | 2 | ||||
| -rw-r--r-- | drivers/scsi/libata-scsi.c | 12 | ||||
| -rw-r--r-- | drivers/scsi/libata.h | 1 |
3 files changed, 14 insertions, 1 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index e5b01997117a..902c76364af7 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -4113,7 +4113,7 @@ int ata_device_add(struct ata_probe_ent *ent) for (i = 0; i < count; i++) { struct ata_port *ap = host_set->ports[i]; - scsi_scan_host(ap->host); + ata_scsi_scan_host(ap); } dev_set_drvdata(dev, host_set); diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index 104fd9a63e73..4fc0134d4272 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -1678,3 +1678,15 @@ void ata_scsi_simulate(u16 *id, } } +void ata_scsi_scan_host(struct ata_port *ap) +{ + unsigned int i; + + if (ap->flags & ATA_FLAG_PORT_DISABLED) + return; + + for (i = 0; i < ATA_MAX_DEVICES; i++) + if (ata_dev_present(&ap->device[i])) + scsi_scan_target(&ap->host->shost_gendev, 0, i, ~0, 0); +} + diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h index d608b3a0f6fe..c7a1fa1c9abc 100644 --- a/drivers/scsi/libata.h +++ b/drivers/scsi/libata.h @@ -51,6 +51,7 @@ extern void swap_buf_le16(u16 *buf, unsigned int buf_words); /* libata-scsi.c */ +extern void ata_scsi_scan_host(struct ata_port *ap); extern void ata_to_sense_error(struct ata_queued_cmd *qc, u8 drv_stat); extern int ata_scsi_error(struct Scsi_Host *host); extern unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf, |