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Date: Sat, 23 Mar 2002 14:11:21 +0100
From: Martin Dalecki <dalecki@evision-ventures.com>
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To: John Langford <jcl@cs.cmu.edu>
CC: Alan Cox <alan@lxorguk.ukuu.org.uk>, linux-kernel@vger.kernel.org,
        ahaas@neosoft.com, dave@zarzycki.org, ben.de.rydt@pandora.be
Subject: Re: BUG: 2.4.18 & ALI15X3 DMA hang on boot
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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!

>                 }
>                 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 :-)

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