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    SubjectRe: BUG: 2.4.18 & ALI15X3 DMA hang on boot
    On Sat, Mar 23, 2002 at 02:11:21PM +0100, Martin Dalecki wrote:
    > John Langford wrote:
    > > I went nuts with printk statements and managed to isolate the hang to
    > > one particular line of code. The final printk in this code fragment
    > > never gets executed.
    > >
    > > } else if (m5229_revision >= 0xC3) {
    > > /*
    > > * 1553/1535 (m1533, 0x79, bit 1)
    > > */
    > > printk("ata66_ali15x3 } else if (m5229_revisi\on >= 0xC3) {\n");
    > > pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x02);
    >
    > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    >
    > pci_write_config to isa_dev???? This looks at least suspicious.
    > You may very well check whatever isa_dev is trully a PCI device
    > handle or just some random IO base for ISA bus!

    You may wanted to check yourself:

    isa_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);

    so the command is valid.

    > > printk("ata66_ali15x3 endif\n");
    > >
    > > Art, Dave, and Ben may or may not have the same problem. It would be
    > > interesting to know if they get a hang here.
    > >
    > > Any ideas for fixing?
    >
    > See above :-)

    --
    Vojtech Pavlik
    SuSE Labs
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