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SubjectRe: [BUG/WARN] Error initialising drivers in PCI
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On Sunday 18 February 2007 20:53, Ian McDonald wrote:
> 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

Tejun, it seems that resources hacks and devres changes don't mix well.

> 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.

Ian, you have an PATA controller so there is no need to use ata_piix.
Just disabling ata_piix should workaround the issue.

> 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
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