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

From: Michael Ellerman <[email-masked]>
Date: Thu, 09 Apr 2009 09:53:13 +1000

On Wed, 2009-04-08 at 17:15 -0500, Timur Tabi wrote:
> On Wed, Apr 8, 2009 at 4:31 PM, Tejun Heo <[email-masked]> 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));
..

cheers

-- 
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person