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---Problem Description---
root@powerio-le21:/sys/bus/pci/slots# ls -l
total 0
drwxr-xr-x 2 root root 0 Jul 15 21:03 1
drwxr-xr-x 2 root root 0 Jul 15 21:03 16
drwxr-xr-x 2 root root 0 Jul 15 21:03 17
drwxr-xr-x 2 root root 0 Jul 15 21:03 8
drwxr-xr-x 2 root root 0 Jul 15 21:03 8-1
drwxr-xr-x 2 root root 0 Jul 15 21:03 9
drwxr-xr-x 2 root root 0 Jul 15 21:03 9-1

In /sys/bus/pci/slots directory, there are bunch of numbers. What these
numbers mean? Do we expect slot_name for each pci device here?

Some applications read these number as slot_name for pci device. For
example, there is a Solstice SAS adapter on this system, when we dump
detail information for this adapter, we got "Platform Location = 8".

                   IOA Hardware Resource Information Details


Manufacturer . . . . . . . . . . . . . . : IBM
Machine Type and Model . . . . . . . . . : 57D7001SISIOA
Firmware Version . . . . . . . . . . . . : FFFFFFFF
Serial Number. . . . . . . . . . . . . . : 00398091
Part Number. . . . . . . . . . . . . . . : 0000000E3229
Plant of Manufacturer. . . . . . . . . . : 00UE
DRAM Size. . . . . . . . . . . . . . . . : 512 MB
Resource Name. . . . . . . . . . . . . . : /dev/sg19

Physical location
PCI Address. . . . . . . . . . . . . . . : 0001:04:00.0
Resource Path. . . . . . . . . . . . . . : FE
SCSI Host Number . . . . . . . . . . . . : 0
Platform Location. . . . . . . . . . . . : 8
 
---uname output---
3.13.0
 
Machine Type = P8 
 
---Steps to Reproduce---
iprconfig->1
 
In other distros, we see the real location code in this directory. For example:

[root@jupiter1-lp1 slots]# pwd
/sys/bus/pci/slots

drwxr-xr-x. 2 root root 0 Jul  9 12:15 UTMP3.C02.01AC022-P1-C10
drwxr-xr-x. 2 root root 0 Jul  9 12:15 UTMP3.C02.01AC022-P1-C2
drwxr-xr-x. 2 root root 0 Jul  9 12:15 UTMP3.C02.01AC022-P1-C3
drwxr-xr-x. 2 root root 0 Jul  9 12:15 UTMP3.C02.01AC022-P1-C9

or in PowerKVM, It is empty in /sys/bus/pci/slots.

In Ubuntu, these random numbers break some code in iprconfig. What is
generating these in Ubuntu?

Thanks,
Wendy

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: architecture-ppc64le bugnameltc-113275 severity-high targetmilestone-inin1410
-- 
Ubuntu14.04: /sys/bus/pci/slots show weird numbers as slot_name on PPC64LE
https://bugs.launchpad.net/bugs/1343032
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