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    Subject[BUG/WARN] Error initialising drivers in PCI
    I'm getting this in my logs when starting up after going from a
    2.6.20rc5 kernel (which didn't do this) to Linus' latest tree as of 36
    hours ago:

    Feb 18 14:52:32 localhost kernel: [ 16.392136] Uniform
    Multi-Platform E-IDE driver Revision: 7.00alpha2
    Feb 18 14:52:32 localhost kernel: [ 16.392210] ide: Assuming 33MHz
    system bus speed for PIO modes; override with idebus=xx
    Feb 18 14:52:32 localhost kernel: [ 16.395039] Probing IDE interface ide0...
    Feb 18 14:52:32 localhost kernel: [ 16.780057] hda: ST315310A, ATA DISK drive
    Feb 18 14:52:32 localhost kernel: [ 17.391365] Probing IDE interface ide1...
    Feb 18 14:52:32 localhost kernel: [ 18.184752] hdc: LTN485, ATAPI
    CD/DVD-ROM drive
    Feb 18 14:52:32 localhost kernel: [ 18.490570] ide0 at
    0x1f0-0x1f7,0x3f6 on irq 14
    Feb 18 14:52:32 localhost kernel: [ 18.490978] ide1 at
    0x170-0x177,0x376 on irq 15
    Feb 18 14:52:32 localhost kernel: [ 18.493214] hda: max request size: 128KiB
    Feb 18 14:52:32 localhost kernel: [ 18.493735] hda: 29336832 sectors
    (15020 MB) w/2048KiB Cache, CHS=29104/16/63
    Feb 18 14:52:32 localhost kernel: [ 18.493899] hda: cache flushes
    not supported
    Feb 18 14:52:32 localhost kernel: [ 18.494530] hda: hda1 hda2 < hda5 >
    Feb 18 14:52:32 localhost kernel: [ 18.536466] ata_piix
    0000:00:1f.1: version 2.00ac7
    Feb 18 14:52:32 localhost kernel: [ 18.536579] ata: 0x1F0 IDE port busy
    Feb 18 14:52:32 localhost kernel: [ 18.536583] ata: conflict with ide0
    Feb 18 14:52:32 localhost kernel: [ 18.536719] BUG: at
    drivers/pci/pci.c:840 pcim_pin_device()
    Feb 18 14:52:32 localhost kernel: [ 18.536786] [<c0104e91>]
    show_trace_log_lvl+0x1a/0x2f
    Feb 18 14:52:32 localhost kernel: [ 18.536897] [<c01054d1>]
    show_trace+0x12/0x14
    Feb 18 14:52:32 localhost kernel: [ 18.536991] [<c0105583>]
    dump_stack+0x16/0x18
    Feb 18 14:52:32 localhost kernel: [ 18.537085] [<c01d1c45>]
    pcim_pin_device+0x40/0x4d
    Feb 18 14:52:32 localhost kernel: [ 18.537201] [<c024822f>]
    ata_pci_init_one+0x1ac/0x4bb
    Feb 18 14:52:32 localhost kernel: [ 18.537330] [<c024ce7d>]
    piix_init_one+0x418/0x435
    Feb 18 14:52:32 localhost kernel: [ 18.537431] [<c01d424d>]
    pci_device_probe+0x39/0x5b
    Feb 18 14:52:32 localhost kernel: [ 18.537528] [<c021c82f>]
    really_probe+0xbd/0x145
    Feb 18 14:52:32 localhost kernel: [ 18.537638] [<c021c94c>]
    driver_probe_device+0x95/0xa1
    Feb 18 14:52:32 localhost kernel: [ 18.537734] [<c021ca61>]
    __driver_attach+0x6a/0xa1
    Feb 18 14:52:32 localhost kernel: [ 18.537829] [<c021be19>]
    bus_for_each_dev+0x36/0x5b
    Feb 18 14:52:32 localhost kernel: [ 18.537925] [<c021c6a3>]
    driver_attach+0x19/0x1b
    Feb 18 14:52:32 localhost kernel: [ 18.538019] [<c021c109>]
    bus_add_driver+0x6a/0x170
    Feb 18 14:52:32 localhost kernel: [ 18.538114] [<c021cc6c>]
    driver_register+0x79/0x7e
    Feb 18 14:52:32 localhost kernel: [ 18.538209] [<c01d43ca>]
    __pci_register_driver+0x7b/0xa8
    Feb 18 14:52:32 localhost kernel: [ 18.538381] [<c04280d6>]
    piix_init+0x14/0x27
    Feb 18 14:52:32 localhost kernel: [ 18.538496] [<c040f708>] init+0x95/0x17a
    Feb 18 14:52:32 localhost kernel: [ 18.538597] [<c0104b13>]
    kernel_thread_helper+0x7/0x10
    Feb 18 14:52:32 localhost kernel: [ 18.538693] =======================
    Feb 18 14:52:32 localhost kernel: [ 18.538752] ata: 0x170 IDE port busy
    Feb 18 14:52:32 localhost kernel: [ 18.538756] ata: conflict with ide1
    Feb 18 14:52:32 localhost kernel: [ 18.538905] ata_piix: probe of
    0000:00:1f.1 failed with error -16

    Kernel is standard tree with no modifications.

    Relevant code which triggers this from devices/pci/pci.c is:
    void pcim_pin_device(struct pci_dev *pdev)
    {
    struct pci_devres *dr;

    dr = find_pci_dr(pdev);
    WARN_ON(!dr || !dr->disable);
    if (dr)
    dr->disable = 0;
    }

    and it is the WARN_ON that is the line.

    .config of kernel is attached.
    output of lspci -vv is attached.

    Can you please cc me on any discussions/requests as not subscribed to lkml.

    NB Machine continues with boot and can run after this. Machine is a
    little unstable though but could also be Broadcom 4306 issues as not
    sure these drivers are yet stable on my machine...

    Ian
    --
    Web: http://wand.net.nz/~iam4
    Blog: http://iansblog.jandi.co.nz
    WAND Network Research Group
    [unhandled content-type:application/x-gzip]00:00.0 Host bridge: Intel Corporation 82815 815 Chipset Host Bridge and Memory Controller Hub (rev 02)
    Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
    Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR-
    Latency: 0
    Capabilities: <access denied>

    00:02.0 VGA compatible controller: Intel Corporation 82815 CGC [Chipset Graphics Controller] (rev 02) (prog-if 00 [VGA])
    Subsystem: Compaq Computer Corporation Unknown device 0019
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
    Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
    Latency: 0
    Interrupt: pin A routed to IRQ 5
    Region 0: Memory at 44000000 (32-bit, prefetchable) [size=64M]
    Region 1: Memory at 40400000 (32-bit, non-prefetchable) [size=512K]
    Capabilities: <access denied>

    00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 01) (prog-if 00 [Normal decode])
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
    Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
    Latency: 0
    Bus: primary=00, secondary=02, subordinate=02, sec-latency=64
    I/O behind bridge: 00001000-00001fff
    Memory behind bridge: 40000000-403fffff
    Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
    BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-

    00:1f.0 ISA bridge: Intel Corporation 82801BA ISA Bridge (LPC) (rev 01)
    Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
    Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
    Latency: 0

    00:1f.1 IDE interface: Intel Corporation 82801BA IDE U100 (rev 01) (prog-if 80 [Master])
    Subsystem: Intel Corporation Unknown device 2411
    Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
    Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
    Latency: 0
    Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [disabled] [size=8]
    Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable) [disabled] [size=1]
    Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable) [disabled] [size=8]
    Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable) [disabled] [size=1]
    Region 4: I/O ports at 2460 [size=16]

    00:1f.4 USB Controller: Intel Corporation 82801BA/BAM USB (Hub #2) (rev 01) (prog-if 00 [UHCI])
    Subsystem: Intel Corporation Unknown device 2411
    Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
    Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
    Latency: 0
    Interrupt: pin C routed to IRQ 16
    Region 4: I/O ports at 2440 [size=32]

    00:1f.5 Multimedia audio controller: Intel Corporation 82801BA/BAM AC'97 Audio (rev 01)
    Subsystem: Compaq Computer Corporation Compaq Deskpro EN Audio
    Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
    Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
    Latency: 0
    Interrupt: pin B routed to IRQ 19
    Region 0: I/O ports at 2000 [size=256]
    Region 1: I/O ports at 2400 [size=64]

    02:04.0 Network controller: Broadcom Corporation BCM4306 802.11b/g Wireless LAN Controller (rev 03)
    Subsystem: Linksys Unknown device 0013
    Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
    Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
    Latency: 66
    Interrupt: pin A routed to IRQ 18
    Region 0: Memory at 40000000 (32-bit, non-prefetchable) [size=8K]

    02:08.0 Ethernet controller: Intel Corporation 82801BA/BAM/CA/CAM Ethernet Controller (rev 01)
    Subsystem: Compaq Computer Corporation EtherExpress PRO/100 VM
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
    Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
    Latency: 66 (2000ns min, 14000ns max), Cache Line Size: 32 bytes
    Interrupt: pin A routed to IRQ 17
    Region 0: Memory at 40100000 (32-bit, non-prefetchable) [size=4K]
    Region 1: I/O ports at 1000 [size=64]
    Capabilities: <access denied>

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