diff options
| author | David Milburn <dmilburn@redhat.com> | 2013-05-14 22:48:40 +0400 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-05-14 22:44:07 +0400 |
| commit | e628dc999e43a9dd51fb6bd810772c277f934484 (patch) | |
| tree | d950d81c8a2351ae0f12cc5cb45a7f6222dadc98 /drivers/ata/libata-transport.c | |
| parent | f722406faae2d073cc1d01063d1123c35425939e (diff) | |
| download | linux-e628dc999e43a9dd51fb6bd810772c277f934484.tar.xz | |
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-transport.c')
| -rw-r--r-- | drivers/ata/libata-transport.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/ata/libata-transport.c b/drivers/ata/libata-transport.c index c04d393d20c1..077a856f5fd0 100644 --- a/drivers/ata/libata-transport.c +++ b/drivers/ata/libata-transport.c @@ -37,7 +37,7 @@ #include "libata.h" #include "libata-transport.h" -#define ATA_PORT_ATTRS 2 +#define ATA_PORT_ATTRS 3 #define ATA_LINK_ATTRS 3 #define ATA_DEV_ATTRS 9 @@ -216,6 +216,7 @@ static DEVICE_ATTR(name, S_IRUGO, show_ata_port_##name, NULL) ata_port_simple_attr(nr_pmp_links, nr_pmp_links, "%d\n", int); ata_port_simple_attr(stats.idle_irq, idle_irq, "%ld\n", unsigned long); +ata_port_simple_attr(local_port_no, port_no, "%u\n", unsigned int); static DECLARE_TRANSPORT_CLASS(ata_port_class, "ata_port", NULL, NULL, NULL); @@ -709,6 +710,7 @@ struct scsi_transport_template *ata_attach_transport(void) count = 0; SETUP_PORT_ATTRIBUTE(nr_pmp_links); SETUP_PORT_ATTRIBUTE(idle_irq); + SETUP_PORT_ATTRIBUTE(port_no); BUG_ON(count > ATA_PORT_ATTRS); i->port_attrs[count] = NULL; |