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| author | David Milburn <dmilburn@redhat.com> | 2013-05-14 13:48:40 -0500 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-05-14 11:44:07 -0700 |
| commit | e628dc999e43a9dd51fb6bd810772c277f934484 (patch) | |
| tree | d950d81c8a2351ae0f12cc5cb45a7f6222dadc98 /drivers/ata/libata-core.c | |
| parent | f722406faae2d073cc1d01063d1123c35425939e (diff) | |
| download | linux-e628dc999e43a9dd51fb6bd810772c277f934484.tar.gz linux-e628dc999e43a9dd51fb6bd810772c277f934484.tar.bz2 linux-e628dc999e43a9dd51fb6bd810772c277f934484.zip | |
libata: export ata_port port_no attribute via /sys
While registering host controller track port number based upon number
of ports available on the controller, export port_no attribute through
/sys. This patch is needed by udev for composing persistent links in
/dev/disk/by-path.
/sys/devices/pci0000:00/0000:00:1f.2/ata8/ata_port/ata8
total 0
lrwxrwxrwx. 1 root root 0 Mar 6 12:43 device -> ../../../ata8
-r--r--r--. 1 root root 4096 Mar 6 12:43 idle_irq
-r--r--r--. 1 root root 4096 Mar 6 12:43 nr_pmp_links
-r--r--r--. 1 root root 4096 Mar 6 12:43 port_no
drwxr-xr-x. 2 root root 0 Mar 6 12:42 power
lrwxrwxrwx. 1 root root 0 Mar 6 12:41 subsystem -> ../../../../../../class/ata_port
-rw-r--r--. 1 root root 4096 Mar 6 12:40 uevent
1
Signed-off-by: David Milburn <dmilburn@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 63c743baf920..5f7d5f9ee820 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5636,6 +5636,7 @@ struct ata_port *ata_port_alloc(struct ata_host *host) ap->pflags |= ATA_PFLAG_INITIALIZING | ATA_PFLAG_FROZEN; ap->lock = &host->lock; ap->print_id = -1; + ap->local_port_no = -1; ap->host = host; ap->dev = host->dev; @@ -6126,9 +6127,10 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht) kfree(host->ports[i]); /* give ports names and add SCSI hosts */ - for (i = 0; i < host->n_ports; i++) + for (i = 0; i < host->n_ports; i++) { host->ports[i]->print_id = atomic_inc_return(&ata_print_id); - + host->ports[i]->local_port_no = i + 1; + } /* Create associated sysfs transport objects */ for (i = 0; i < host->n_ports; i++) { |