What is the correct way to indicate an unassigned PCI resource ?

[Olaf Hering]

On Tue, Dec 05, Benjamin Herrenschmidt wrote:

> Olaf, can you give me a dump of /proc/ioports ? What is sitting at 0 on
> that PCI bus ?

with IDE=y

==> /proc/ioports <==
00000000-0000001f : dma1
00000020-00000021 : 8259 (master)
00000040-0000005f : timer
00000060-0000006f : i8042
00000080-0000008f : dma page reg
000000a0-000000a1 : 8259 (slave)
000000c0-000000df : dma2
000002f8-000002ff : serial
000003c0-000003df : matrox
000003f8-000003ff : serial
000004d0-000004d1 : 8259 edge control
00000898-0000089f : serial
0000f000-0000f007 : 0000:00:03.1
  0000f000-0000f007 : ide0
0000f010-0000f013 : 0000:00:03.1
  0000f012-0000f012 : ide0
0000f020-0000f027 : 0000:00:03.1
0000f030-0000f033 : 0000:00:03.1
0000f040-0000f04f : 0000:00:03.1
  0000f040-0000f047 : ide0
  0000f048-0000f04f : ide1
00010000-0001ffff : PCI Bus #01
00020000-0002ffff : PCI Bus #21
  0002ec00-0002ec3f : 0000:21:01.0
    0002ec00-0002ec3f : e100
00030000-0003ffff : PCI Bus #41
  0003e800-0003e8ff : 0000:41:01.0
    0003e800-0003e8ff : sym53c8xx
  0003ec00-0003ecff : 0000:41:01.1
    0003ec00-0003ecff : sym53c8xx
00040000-0004ffff : PCI Bus #61
00100000-001fffff : /pci at 400000000112
  00100000-0010ffff : PCI Bus #01
  00110000-0011ffff : PCI Bus #21
    0011ec00-0011ec3f : 0001:21:01.0
      0011ec00-0011ec3f : e100
  00120000-0012ffff : PCI Bus #61