Re: "ahci: drop intx manipulation on msi enable" breaks ULI M1575

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On Apr 8, 2009, at 11:38 PM, Michael Ellerman wrote:

On Wed, 2009-04-08 at 23:23 -0500, Kumar Gala wrote:
On Apr 8, 2009, at 6:53 PM, Michael Ellerman wrote:

On Wed, 2009-04-08 at 17:15 -0500, Timur Tabi wrote:
On Wed, Apr 8, 2009 at 4:31 PM, Tejun Heo <tj@xxxxxxxxxx> wrote:
Hmmm... for now,
I think it would be best to revert the original change.  Jeff, can
you
please do that?

Actually, give me a few days before you do that. A colleague gave me
some suggestions to debug this.

What device did you say it was? A "ULI M1575" ?

Is that this one?

DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575,
hpcd_quirk_uli1575);

static void __devinit hpcd_quirk_uli1575(struct pci_dev *dev)
{
      u32 temp32;

      if (!machine_is(mpc86xx_hpcd))
              return;

      /* Disable INTx */
      pci_read_config_dword(dev, 0x48, &temp32);
      pci_write_config_dword(dev, 0x48, (temp32 | 1<<26));
..

It is the odd thing is the board he's running on is a mpc86xx_hpcd so
he shouldn't be hitting the code that actually disables INTx.

Sorry Kumar that's not parsing :)

He is running an mpc86xx_hpcd, so he _should_ be hitting the code that
disables INTX?


duh.. reading the !machine_is.. code incorrectly.

- k
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